64471940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:493

約数の個数: 96

約数和(自身を含む): 158807040

約数和(自身を除く): 94335100

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 31, 38, 52, 62, 65, 76, 95, 124, 130, 155, 190, 247, 260, 310, 380, 403, 421, 494, 589, 620, 806, 842, 988, 1178, 1235, 1612, 1684, 2015, 2105, 2356, 2470, 2945, 4030, 4210, 4940, 5473, 5890, 7657, 7999, 8060, 8420, 10946, 11780, 13051, 15314, 15998, 21892, 26102, 27365, 30628, 31996, 38285, 39995, 52204, 54730, 65255, 76570, 79990, 103987, 109460, 130510, 153140, 159980, 169663, 207974, 247969, 261020, 339326, 415948, 495938, 519935, 678652, 848315, 991876, 1039870, 1239845, 1696630, 2079740, 2479690, 3223597, 3393260, 4959380, 6447194, 12894388, 16117985, 32235970, 64471940]

約数ペア:

[(1, 64471940), (2, 32235970), (4, 16117985), (5, 12894388), (10, 6447194), (13, 4959380), (19, 3393260), (20, 3223597), (26, 2479690), (31, 2079740), (38, 1696630), (52, 1239845), (62, 1039870), (65, 991876), (76, 848315), (95, 678652), (124, 519935), (130, 495938), (155, 415948), (190, 339326), (247, 261020), (260, 247969), (310, 207974), (380, 169663), (403, 159980), (421, 153140), (494, 130510), (589, 109460), (620, 103987), (806, 79990), (842, 76570), (988, 65255), (1178, 54730), (1235, 52204), (1612, 39995), (1684, 38285), (2015, 31996), (2105, 30628), (2356, 27365), (2470, 26102), (2945, 21892), (4030, 15998), (4210, 15314), (4940, 13051), (5473, 11780), (5890, 10946), (7657, 8420), (7999, 8060)]