21675660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 42675060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 113, 115, 138, 139, 226, 230, 276, 278, 339, 345, 417, 452, 460, 556, 565, 678, 690, 695, 834, 1130, 1356, 1380, 1390, 1668, 1695, 2085, 2260, 2599, 2780, 3197, 3390, 4170, 5198, 6394, 6780, 7797, 8340, 9591, 10396, 12788, 12995, 15594, 15707, 15985, 19182, 25990, 31188, 31414, 31970, 38364, 38985, 47121, 47955, 51980, 62828, 63940, 77970, 78535, 94242, 95910, 155940, 157070, 188484, 191820, 235605, 314140, 361261, 471210, 722522, 942420, 1083783, 1445044, 1806305, 2167566, 3612610, 4335132, 5418915, 7225220, 10837830, 21675660]

約数ペア:

[(1, 21675660), (2, 10837830), (3, 7225220), (4, 5418915), (5, 4335132), (6, 3612610), (10, 2167566), (12, 1806305), (15, 1445044), (20, 1083783), (23, 942420), (30, 722522), (46, 471210), (60, 361261), (69, 314140), (92, 235605), (113, 191820), (115, 188484), (138, 157070), (139, 155940), (226, 95910), (230, 94242), (276, 78535), (278, 77970), (339, 63940), (345, 62828), (417, 51980), (452, 47955), (460, 47121), (556, 38985), (565, 38364), (678, 31970), (690, 31414), (695, 31188), (834, 25990), (1130, 19182), (1356, 15985), (1380, 15707), (1390, 15594), (1668, 12995), (1695, 12788), (2085, 10396), (2260, 9591), (2599, 8340), (2780, 7797), (3197, 6780), (3390, 6394), (4170, 5198)]