21551200

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:141

約数の個数: 144

約数和(自身を含む): 59996160

約数和(自身を除く): 38444960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 31, 32, 40, 44, 50, 55, 62, 79, 80, 88, 100, 110, 124, 155, 158, 160, 176, 200, 220, 248, 275, 310, 316, 341, 352, 395, 400, 440, 496, 550, 620, 632, 682, 775, 790, 800, 869, 880, 992, 1100, 1240, 1264, 1364, 1550, 1580, 1705, 1738, 1760, 1975, 2200, 2449, 2480, 2528, 2728, 3100, 3160, 3410, 3476, 3950, 4345, 4400, 4898, 4960, 5456, 6200, 6320, 6820, 6952, 7900, 8525, 8690, 8800, 9796, 10912, 12245, 12400, 12640, 13640, 13904, 15800, 17050, 17380, 19592, 21725, 24490, 24800, 26939, 27280, 27808, 31600, 34100, 34760, 39184, 43450, 48980, 53878, 54560, 61225, 63200, 68200, 69520, 78368, 86900, 97960, 107756, 122450, 134695, 136400, 139040, 173800, 195920, 215512, 244900, 269390, 272800, 347600, 391840, 431024, 489800, 538780, 673475, 695200, 862048, 979600, 1077560, 1346950, 1959200, 2155120, 2693900, 4310240, 5387800, 10775600, 21551200]

約数ペア:

[(1, 21551200), (2, 10775600), (4, 5387800), (5, 4310240), (8, 2693900), (10, 2155120), (11, 1959200), (16, 1346950), (20, 1077560), (22, 979600), (25, 862048), (31, 695200), (32, 673475), (40, 538780), (44, 489800), (50, 431024), (55, 391840), (62, 347600), (79, 272800), (80, 269390), (88, 244900), (100, 215512), (110, 195920), (124, 173800), (155, 139040), (158, 136400), (160, 134695), (176, 122450), (200, 107756), (220, 97960), (248, 86900), (275, 78368), (310, 69520), (316, 68200), (341, 63200), (352, 61225), (395, 54560), (400, 53878), (440, 48980), (496, 43450), (550, 39184), (620, 34760), (632, 34100), (682, 31600), (775, 27808), (790, 27280), (800, 26939), (869, 24800), (880, 24490), (992, 21725), (1100, 19592), (1240, 17380), (1264, 17050), (1364, 15800), (1550, 13904), (1580, 13640), (1705, 12640), (1738, 12400), (1760, 12245), (1975, 10912), (2200, 9796), (2449, 8800), (2480, 8690), (2528, 8525), (2728, 7900), (3100, 6952), (3160, 6820), (3410, 6320), (3476, 6200), (3950, 5456), (4345, 4960), (4400, 4898)]