203207960

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1\times {\mathrm{281}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 465976800

約数和(自身を除く): 262768840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 179, 202, 281, 358, 404, 505, 562, 716, 808, 895, 1010, 1124, 1405, 1432, 1790, 2020, 2248, 2810, 3580, 4040, 5620, 7160, 11240, 18079, 28381, 36158, 50299, 56762, 72316, 90395, 100598, 113524, 141905, 144632, 180790, 201196, 227048, 251495, 283810, 361580, 402392, 502990, 567620, 723160, 1005980, 1135240, 2011960, 5080199, 10160398, 20320796, 25400995, 40641592, 50801990, 101603980, 203207960]

約数ペア:

[(1, 203207960), (2, 101603980), (4, 50801990), (5, 40641592), (8, 25400995), (10, 20320796), (20, 10160398), (40, 5080199), (101, 2011960), (179, 1135240), (202, 1005980), (281, 723160), (358, 567620), (404, 502990), (505, 402392), (562, 361580), (716, 283810), (808, 251495), (895, 227048), (1010, 201196), (1124, 180790), (1405, 144632), (1432, 141905), (1790, 113524), (2020, 100598), (2248, 90395), (2810, 72316), (3580, 56762), (4040, 50299), (5620, 36158), (7160, 28381), (11240, 18079)]