28115820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8221}}^1$

素因数の和:8255

約数の個数: 72

約数和(自身を含む): 89784240

約数和(自身を除く): 61668420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 8221, 16442, 24663, 32884, 41105, 49326, 73989, 82210, 98652, 123315, 147978, 156199, 164420, 246630, 295956, 312398, 369945, 468597, 493260, 624796, 739890, 780995, 937194, 1405791, 1479780, 1561990, 1874388, 2342985, 2811582, 3123980, 4685970, 5623164, 7028955, 9371940, 14057910, 28115820]

約数ペア:

[(1, 28115820), (2, 14057910), (3, 9371940), (4, 7028955), (5, 5623164), (6, 4685970), (9, 3123980), (10, 2811582), (12, 2342985), (15, 1874388), (18, 1561990), (19, 1479780), (20, 1405791), (30, 937194), (36, 780995), (38, 739890), (45, 624796), (57, 493260), (60, 468597), (76, 369945), (90, 312398), (95, 295956), (114, 246630), (171, 164420), (180, 156199), (190, 147978), (228, 123315), (285, 98652), (342, 82210), (380, 73989), (570, 49326), (684, 41105), (855, 32884), (1140, 24663), (1710, 16442), (3420, 8221)]