18942800

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:141

約数の個数: 120

約数和(自身を含む): 49818240

約数和(自身を除く): 30875440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 29, 40, 46, 50, 58, 71, 80, 92, 100, 115, 116, 142, 145, 184, 200, 230, 232, 284, 290, 355, 368, 400, 460, 464, 568, 575, 580, 667, 710, 725, 920, 1136, 1150, 1160, 1334, 1420, 1450, 1633, 1775, 1840, 2059, 2300, 2320, 2668, 2840, 2900, 3266, 3335, 3550, 4118, 4600, 5336, 5680, 5800, 6532, 6670, 7100, 8165, 8236, 9200, 10295, 10672, 11600, 13064, 13340, 14200, 16330, 16472, 16675, 20590, 26128, 26680, 28400, 32660, 32944, 33350, 40825, 41180, 47357, 51475, 53360, 65320, 66700, 81650, 82360, 94714, 102950, 130640, 133400, 163300, 164720, 189428, 205900, 236785, 266800, 326600, 378856, 411800, 473570, 653200, 757712, 823600, 947140, 1183925, 1894280, 2367850, 3788560, 4735700, 9471400, 18942800]

約数ペア:

[(1, 18942800), (2, 9471400), (4, 4735700), (5, 3788560), (8, 2367850), (10, 1894280), (16, 1183925), (20, 947140), (23, 823600), (25, 757712), (29, 653200), (40, 473570), (46, 411800), (50, 378856), (58, 326600), (71, 266800), (80, 236785), (92, 205900), (100, 189428), (115, 164720), (116, 163300), (142, 133400), (145, 130640), (184, 102950), (200, 94714), (230, 82360), (232, 81650), (284, 66700), (290, 65320), (355, 53360), (368, 51475), (400, 47357), (460, 41180), (464, 40825), (568, 33350), (575, 32944), (580, 32660), (667, 28400), (710, 26680), (725, 26128), (920, 20590), (1136, 16675), (1150, 16472), (1160, 16330), (1334, 14200), (1420, 13340), (1450, 13064), (1633, 11600), (1775, 10672), (1840, 10295), (2059, 9200), (2300, 8236), (2320, 8165), (2668, 7100), (2840, 6670), (2900, 6532), (3266, 5800), (3335, 5680), (3550, 5336), (4118, 4600)]