778816520

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1\times {\mathrm{997}}^1$

素因数の和:1398

約数の個数: 64

約数和(自身を含む): 1789214400

約数和(自身を除く): 1010397880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 331, 472, 590, 662, 997, 1180, 1324, 1655, 1994, 2360, 2648, 3310, 3988, 4985, 6620, 7976, 9970, 13240, 19529, 19940, 39058, 39880, 58823, 78116, 97645, 117646, 156232, 195290, 235292, 294115, 330007, 390580, 470584, 588230, 660014, 781160, 1176460, 1320028, 1650035, 2352920, 2640056, 3300070, 6600140, 13200280, 19470413, 38940826, 77881652, 97352065, 155763304, 194704130, 389408260, 778816520]

約数ペア:

[(1, 778816520), (2, 389408260), (4, 194704130), (5, 155763304), (8, 97352065), (10, 77881652), (20, 38940826), (40, 19470413), (59, 13200280), (118, 6600140), (236, 3300070), (295, 2640056), (331, 2352920), (472, 1650035), (590, 1320028), (662, 1176460), (997, 781160), (1180, 660014), (1324, 588230), (1655, 470584), (1994, 390580), (2360, 330007), (2648, 294115), (3310, 235292), (3988, 195290), (4985, 156232), (6620, 117646), (7976, 97645), (9970, 78116), (13240, 58823), (19529, 39880), (19940, 39058)]