21121217520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{398213}}^1$

素因数の和:398259

約数の個数: 160

約数和(自身を含む): 74660346432

約数和(自身を除く): 53539128912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 17, 20, 24, 26, 30, 34, 39, 40, 48, 51, 52, 60, 65, 68, 78, 80, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 208, 221, 240, 255, 260, 272, 312, 340, 390, 408, 442, 510, 520, 624, 663, 680, 780, 816, 884, 1020, 1040, 1105, 1326, 1360, 1560, 1768, 2040, 2210, 2652, 3120, 3315, 3536, 4080, 4420, 5304, 6630, 8840, 10608, 13260, 17680, 26520, 53040, 398213, 796426, 1194639, 1592852, 1991065, 2389278, 3185704, 3982130, 4778556, 5176769, 5973195, 6371408, 6769621, 7964260, 9557112, 10353538, 11946390, 13539242, 15530307, 15928520, 19114224, 20308863, 20707076, 23892780, 25883845, 27078484, 31060614, 31857040, 33848105, 40617726, 41414152, 47785560, 51767690, 54156968, 62121228, 67696210, 77651535, 81235452, 82828304, 88005073, 95571120, 101544315, 103535380, 108313936, 124242456, 135392420, 155303070, 162470904, 176010146, 203088630, 207070760, 248484912, 264015219, 270784840, 310606140, 324941808, 352020292, 406177260, 414141520, 440025365, 528030438, 541569680, 621212280, 704040584, 812354520, 880050730, 1056060876, 1242424560, 1320076095, 1408081168, 1624709040, 1760101460, 2112121752, 2640152190, 3520202920, 4224243504, 5280304380, 7040405840, 10560608760, 21121217520]

約数ペア:

[(1, 21121217520), (2, 10560608760), (3, 7040405840), (4, 5280304380), (5, 4224243504), (6, 3520202920), (8, 2640152190), (10, 2112121752), (12, 1760101460), (13, 1624709040), (15, 1408081168), (16, 1320076095), (17, 1242424560), (20, 1056060876), (24, 880050730), (26, 812354520), (30, 704040584), (34, 621212280), (39, 541569680), (40, 528030438), (48, 440025365), (51, 414141520), (52, 406177260), (60, 352020292), (65, 324941808), (68, 310606140), (78, 270784840), (80, 264015219), (85, 248484912), (102, 207070760), (104, 203088630), (120, 176010146), (130, 162470904), (136, 155303070), (156, 135392420), (170, 124242456), (195, 108313936), (204, 103535380), (208, 101544315), (221, 95571120), (240, 88005073), (255, 82828304), (260, 81235452), (272, 77651535), (312, 67696210), (340, 62121228), (390, 54156968), (408, 51767690), (442, 47785560), (510, 41414152), (520, 40617726), (624, 33848105), (663, 31857040), (680, 31060614), (780, 27078484), (816, 25883845), (884, 23892780), (1020, 20707076), (1040, 20308863), (1105, 19114224), (1326, 15928520), (1360, 15530307), (1560, 13539242), (1768, 11946390), (2040, 10353538), (2210, 9557112), (2652, 7964260), (3120, 6769621), (3315, 6371408), (3536, 5973195), (4080, 5176769), (4420, 4778556), (5304, 3982130), (6630, 3185704), (8840, 2389278), (10608, 1991065), (13260, 1592852), (17680, 1194639), (26520, 796426), (53040, 398213)]