81112980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103991}}^1$

素因数の和:104016

約数の個数: 48

約数和(自身を含む): 244589184

約数和(自身を除く): 163476204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 103991, 207982, 311973, 415964, 519955, 623946, 1039910, 1247892, 1351883, 1559865, 2079820, 2703766, 3119730, 4055649, 5407532, 6239460, 6759415, 8111298, 13518830, 16222596, 20278245, 27037660, 40556490, 81112980]

約数ペア:

[(1, 81112980), (2, 40556490), (3, 27037660), (4, 20278245), (5, 16222596), (6, 13518830), (10, 8111298), (12, 6759415), (13, 6239460), (15, 5407532), (20, 4055649), (26, 3119730), (30, 2703766), (39, 2079820), (52, 1559865), (60, 1351883), (65, 1247892), (78, 1039910), (130, 623946), (156, 519955), (195, 415964), (260, 311973), (390, 207982), (780, 103991)]