128219940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{30971}}^1$

素因数の和:31009

約数の個数: 72

約数和(自身を含む): 405857088

約数和(自身を除く): 277637148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 30971, 61942, 92913, 123884, 154855, 185826, 278739, 309710, 371652, 464565, 557478, 619420, 712333, 929130, 1114956, 1393695, 1424666, 1858260, 2136999, 2787390, 2849332, 3561665, 4273998, 5574780, 6410997, 7123330, 8547996, 10684995, 12821994, 14246660, 21369990, 25643988, 32054985, 42739980, 64109970, 128219940]

約数ペア:

[(1, 128219940), (2, 64109970), (3, 42739980), (4, 32054985), (5, 25643988), (6, 21369990), (9, 14246660), (10, 12821994), (12, 10684995), (15, 8547996), (18, 7123330), (20, 6410997), (23, 5574780), (30, 4273998), (36, 3561665), (45, 2849332), (46, 2787390), (60, 2136999), (69, 1858260), (90, 1424666), (92, 1393695), (115, 1114956), (138, 929130), (180, 712333), (207, 619420), (230, 557478), (276, 464565), (345, 371652), (414, 309710), (460, 278739), (690, 185826), (828, 154855), (1035, 123884), (1380, 92913), (2070, 61942), (4140, 30971)]