9780781648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{34031}}^1$

素因数の和:34144

約数の個数: 80

約数和(自身を含む): 21876314112

約数和(自身を除く): 12095532464

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 44, 46, 71, 88, 92, 142, 176, 184, 253, 284, 368, 506, 568, 781, 1012, 1136, 1562, 1633, 2024, 3124, 3266, 4048, 6248, 6532, 12496, 13064, 17963, 26128, 34031, 35926, 68062, 71852, 136124, 143704, 272248, 287408, 374341, 544496, 748682, 782713, 1497364, 1565426, 2416201, 2994728, 3130852, 4832402, 5989456, 6261704, 8609843, 9664804, 12523408, 17219686, 19329608, 26578211, 34439372, 38659216, 53156422, 55572623, 68878744, 106312844, 111145246, 137757488, 212625688, 222290492, 425251376, 444580984, 611298853, 889161968, 1222597706, 2445195412, 4890390824, 9780781648]

約数ペア:

[(1, 9780781648), (2, 4890390824), (4, 2445195412), (8, 1222597706), (11, 889161968), (16, 611298853), (22, 444580984), (23, 425251376), (44, 222290492), (46, 212625688), (71, 137757488), (88, 111145246), (92, 106312844), (142, 68878744), (176, 55572623), (184, 53156422), (253, 38659216), (284, 34439372), (368, 26578211), (506, 19329608), (568, 17219686), (781, 12523408), (1012, 9664804), (1136, 8609843), (1562, 6261704), (1633, 5989456), (2024, 4832402), (3124, 3130852), (3266, 2994728), (4048, 2416201), (6248, 1565426), (6532, 1497364), (12496, 782713), (13064, 748682), (17963, 544496), (26128, 374341), (34031, 287408), (35926, 272248), (68062, 143704), (71852, 136124)]