203307920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{1123}}^1$

素因数の和:1240

約数の個数: 80

約数和(自身を含む): 495063552

約数和(自身を除く): 291755632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 73, 80, 124, 146, 155, 248, 292, 310, 365, 496, 584, 620, 730, 1123, 1168, 1240, 1460, 2246, 2263, 2480, 2920, 4492, 4526, 5615, 5840, 8984, 9052, 11230, 11315, 17968, 18104, 22460, 22630, 34813, 36208, 44920, 45260, 69626, 81979, 89840, 90520, 139252, 163958, 174065, 181040, 278504, 327916, 348130, 409895, 557008, 655832, 696260, 819790, 1311664, 1392520, 1639580, 2541349, 2785040, 3279160, 5082698, 6558320, 10165396, 12706745, 20330792, 25413490, 40661584, 50826980, 101653960, 203307920]

約数ペア:

[(1, 203307920), (2, 101653960), (4, 50826980), (5, 40661584), (8, 25413490), (10, 20330792), (16, 12706745), (20, 10165396), (31, 6558320), (40, 5082698), (62, 3279160), (73, 2785040), (80, 2541349), (124, 1639580), (146, 1392520), (155, 1311664), (248, 819790), (292, 696260), (310, 655832), (365, 557008), (496, 409895), (584, 348130), (620, 327916), (730, 278504), (1123, 181040), (1168, 174065), (1240, 163958), (1460, 139252), (2246, 90520), (2263, 89840), (2480, 81979), (2920, 69626), (4492, 45260), (4526, 44920), (5615, 36208), (5840, 34813), (8984, 22630), (9052, 22460), (11230, 18104), (11315, 17968)]