157179920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1039}}^1$

素因数の和:1144

約数の個数: 80

約数和(自身を含む): 383784960

約数和(自身を除く): 226605040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 61, 62, 80, 122, 124, 155, 244, 248, 305, 310, 488, 496, 610, 620, 976, 1039, 1220, 1240, 1891, 2078, 2440, 2480, 3782, 4156, 4880, 5195, 7564, 8312, 9455, 10390, 15128, 16624, 18910, 20780, 30256, 32209, 37820, 41560, 63379, 64418, 75640, 83120, 126758, 128836, 151280, 161045, 253516, 257672, 316895, 322090, 507032, 515344, 633790, 644180, 1014064, 1267580, 1288360, 1964749, 2535160, 2576720, 3929498, 5070320, 7858996, 9823745, 15717992, 19647490, 31435984, 39294980, 78589960, 157179920]

約数ペア:

[(1, 157179920), (2, 78589960), (4, 39294980), (5, 31435984), (8, 19647490), (10, 15717992), (16, 9823745), (20, 7858996), (31, 5070320), (40, 3929498), (61, 2576720), (62, 2535160), (80, 1964749), (122, 1288360), (124, 1267580), (155, 1014064), (244, 644180), (248, 633790), (305, 515344), (310, 507032), (488, 322090), (496, 316895), (610, 257672), (620, 253516), (976, 161045), (1039, 151280), (1220, 128836), (1240, 126758), (1891, 83120), (2078, 75640), (2440, 64418), (2480, 63379), (3782, 41560), (4156, 37820), (4880, 32209), (5195, 30256), (7564, 20780), (8312, 18910), (9455, 16624), (10390, 15128)]