20281680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1657}}^1$

素因数の和:1693

約数の個数: 120

約数和(自身を含む): 72162792

約数和(自身を除く): 51881112

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1657, 2040, 2448, 3060, 3314, 4080, 4971, 6120, 6628, 8285, 9942, 12240, 13256, 14913, 16570, 19884, 24855, 26512, 28169, 29826, 33140, 39768, 49710, 56338, 59652, 66280, 74565, 79536, 84507, 99420, 112676, 119304, 132560, 140845, 149130, 169014, 198840, 225352, 238608, 253521, 281690, 298260, 338028, 397680, 422535, 450704, 507042, 563380, 596520, 676056, 845070, 1014084, 1126760, 1193040, 1267605, 1352112, 1690140, 2028168, 2253520, 2535210, 3380280, 4056336, 5070420, 6760560, 10140840, 20281680]

約数ペア:

[(1, 20281680), (2, 10140840), (3, 6760560), (4, 5070420), (5, 4056336), (6, 3380280), (8, 2535210), (9, 2253520), (10, 2028168), (12, 1690140), (15, 1352112), (16, 1267605), (17, 1193040), (18, 1126760), (20, 1014084), (24, 845070), (30, 676056), (34, 596520), (36, 563380), (40, 507042), (45, 450704), (48, 422535), (51, 397680), (60, 338028), (68, 298260), (72, 281690), (80, 253521), (85, 238608), (90, 225352), (102, 198840), (120, 169014), (136, 149130), (144, 140845), (153, 132560), (170, 119304), (180, 112676), (204, 99420), (240, 84507), (255, 79536), (272, 74565), (306, 66280), (340, 59652), (360, 56338), (408, 49710), (510, 39768), (612, 33140), (680, 29826), (720, 28169), (765, 26512), (816, 24855), (1020, 19884), (1224, 16570), (1360, 14913), (1530, 13256), (1657, 12240), (2040, 9942), (2448, 8285), (3060, 6628), (3314, 6120), (4080, 4971)]