28020280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{383}}^1$

素因数の和:484

約数の個数: 64

約数和(自身を含む): 66355200

約数和(自身を除く): 38334920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 59, 62, 118, 124, 155, 236, 248, 295, 310, 383, 472, 590, 620, 766, 1180, 1240, 1532, 1829, 1915, 2360, 3064, 3658, 3830, 7316, 7660, 9145, 11873, 14632, 15320, 18290, 22597, 23746, 36580, 45194, 47492, 59365, 73160, 90388, 94984, 112985, 118730, 180776, 225970, 237460, 451940, 474920, 700507, 903880, 1401014, 2802028, 3502535, 5604056, 7005070, 14010140, 28020280]

約数ペア:

[(1, 28020280), (2, 14010140), (4, 7005070), (5, 5604056), (8, 3502535), (10, 2802028), (20, 1401014), (31, 903880), (40, 700507), (59, 474920), (62, 451940), (118, 237460), (124, 225970), (155, 180776), (236, 118730), (248, 112985), (295, 94984), (310, 90388), (383, 73160), (472, 59365), (590, 47492), (620, 45194), (766, 36580), (1180, 23746), (1240, 22597), (1532, 18290), (1829, 15320), (1915, 14632), (2360, 11873), (3064, 9145), (3658, 7660), (3830, 7316)]