291268240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{373}}^1$

素因数の和:656

約数の個数: 80

約数和(自身を含む): 697866048

約数和(自身を除く): 406597808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 227, 344, 373, 430, 454, 688, 746, 860, 908, 1135, 1492, 1720, 1816, 1865, 2270, 2984, 3440, 3632, 3730, 4540, 5968, 7460, 9080, 9761, 14920, 16039, 18160, 19522, 29840, 32078, 39044, 48805, 64156, 78088, 80195, 84671, 97610, 128312, 156176, 160390, 169342, 195220, 256624, 320780, 338684, 390440, 423355, 641560, 677368, 780880, 846710, 1283120, 1354736, 1693420, 3386840, 3640853, 6773680, 7281706, 14563412, 18204265, 29126824, 36408530, 58253648, 72817060, 145634120, 291268240]

約数ペア:

[(1, 291268240), (2, 145634120), (4, 72817060), (5, 58253648), (8, 36408530), (10, 29126824), (16, 18204265), (20, 14563412), (40, 7281706), (43, 6773680), (80, 3640853), (86, 3386840), (172, 1693420), (215, 1354736), (227, 1283120), (344, 846710), (373, 780880), (430, 677368), (454, 641560), (688, 423355), (746, 390440), (860, 338684), (908, 320780), (1135, 256624), (1492, 195220), (1720, 169342), (1816, 160390), (1865, 156176), (2270, 128312), (2984, 97610), (3440, 84671), (3632, 80195), (3730, 78088), (4540, 64156), (5968, 48805), (7460, 39044), (9080, 32078), (9761, 29840), (14920, 19522), (16039, 18160)]