204654320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10357}}^1$

素因数の和:10402

約数の個数: 80

約数和(自身を含む): 539444640

約数和(自身を除く): 334790320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 10357, 19760, 20714, 41428, 51785, 82856, 103570, 134641, 165712, 196783, 207140, 269282, 393566, 414280, 538564, 673205, 787132, 828560, 983915, 1077128, 1346410, 1574264, 1967830, 2154256, 2558179, 2692820, 3148528, 3935660, 5116358, 5385640, 7871320, 10232716, 10771280, 12790895, 15742640, 20465432, 25581790, 40930864, 51163580, 102327160, 204654320]

約数ペア:

[(1, 204654320), (2, 102327160), (4, 51163580), (5, 40930864), (8, 25581790), (10, 20465432), (13, 15742640), (16, 12790895), (19, 10771280), (20, 10232716), (26, 7871320), (38, 5385640), (40, 5116358), (52, 3935660), (65, 3148528), (76, 2692820), (80, 2558179), (95, 2154256), (104, 1967830), (130, 1574264), (152, 1346410), (190, 1077128), (208, 983915), (247, 828560), (260, 787132), (304, 673205), (380, 538564), (494, 414280), (520, 393566), (760, 269282), (988, 207140), (1040, 196783), (1235, 165712), (1520, 134641), (1976, 103570), (2470, 82856), (3952, 51785), (4940, 41428), (9880, 20714), (10357, 19760)]