28440640

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 112

約数和(自身を含む): 72566784

約数和(自身を除く): 44126144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 47, 61, 62, 64, 80, 94, 122, 124, 155, 160, 188, 235, 244, 248, 305, 310, 320, 376, 470, 488, 496, 610, 620, 752, 940, 976, 992, 1220, 1240, 1457, 1504, 1880, 1891, 1952, 1984, 2440, 2480, 2867, 2914, 3008, 3760, 3782, 3904, 4880, 4960, 5734, 5828, 7285, 7520, 7564, 9455, 9760, 9920, 11468, 11656, 14335, 14570, 15040, 15128, 18910, 19520, 22936, 23312, 28670, 29140, 30256, 37820, 45872, 46624, 57340, 58280, 60512, 75640, 88877, 91744, 93248, 114680, 116560, 121024, 151280, 177754, 183488, 229360, 233120, 302560, 355508, 444385, 458720, 466240, 605120, 711016, 888770, 917440, 1422032, 1777540, 2844064, 3555080, 5688128, 7110160, 14220320, 28440640]

約数ペア:

[(1, 28440640), (2, 14220320), (4, 7110160), (5, 5688128), (8, 3555080), (10, 2844064), (16, 1777540), (20, 1422032), (31, 917440), (32, 888770), (40, 711016), (47, 605120), (61, 466240), (62, 458720), (64, 444385), (80, 355508), (94, 302560), (122, 233120), (124, 229360), (155, 183488), (160, 177754), (188, 151280), (235, 121024), (244, 116560), (248, 114680), (305, 93248), (310, 91744), (320, 88877), (376, 75640), (470, 60512), (488, 58280), (496, 57340), (610, 46624), (620, 45872), (752, 37820), (940, 30256), (976, 29140), (992, 28670), (1220, 23312), (1240, 22936), (1457, 19520), (1504, 18910), (1880, 15128), (1891, 15040), (1952, 14570), (1984, 14335), (2440, 11656), (2480, 11468), (2867, 9920), (2914, 9760), (3008, 9455), (3760, 7564), (3782, 7520), (3904, 7285), (4880, 5828), (4960, 5734)]