357780440

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 817236000

約数和(自身を除く): 459455560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 229, 278, 281, 458, 556, 562, 695, 916, 1112, 1124, 1145, 1390, 1405, 1832, 2248, 2290, 2780, 2810, 4580, 5560, 5620, 9160, 11240, 31831, 39059, 63662, 64349, 78118, 127324, 128698, 156236, 159155, 195295, 254648, 257396, 312472, 318310, 321745, 390590, 514792, 636620, 643490, 781180, 1273240, 1286980, 1562360, 2573960, 8944511, 17889022, 35778044, 44722555, 71556088, 89445110, 178890220, 357780440]

約数ペア:

[(1, 357780440), (2, 178890220), (4, 89445110), (5, 71556088), (8, 44722555), (10, 35778044), (20, 17889022), (40, 8944511), (139, 2573960), (229, 1562360), (278, 1286980), (281, 1273240), (458, 781180), (556, 643490), (562, 636620), (695, 514792), (916, 390590), (1112, 321745), (1124, 318310), (1145, 312472), (1390, 257396), (1405, 254648), (1832, 195295), (2248, 159155), (2290, 156236), (2780, 128698), (2810, 127324), (4580, 78118), (5560, 64349), (5620, 63662), (9160, 39059), (11240, 31831)]