123920020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4079}}^1$

素因数の和:4133

約数の個数: 72

約数和(自身を含む): 312560640

約数和(自身を除く): 188640620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 3038, 4079, 4340, 6076, 7595, 8158, 15190, 16316, 20395, 28553, 30380, 40790, 57106, 81580, 114212, 126449, 142765, 199871, 252898, 285530, 399742, 505796, 571060, 632245, 799484, 885143, 999355, 1264490, 1770286, 1998710, 2528980, 3540572, 3997420, 4425715, 6196001, 8851430, 12392002, 17702860, 24784004, 30980005, 61960010, 123920020]

約数ペア:

[(1, 123920020), (2, 61960010), (4, 30980005), (5, 24784004), (7, 17702860), (10, 12392002), (14, 8851430), (20, 6196001), (28, 4425715), (31, 3997420), (35, 3540572), (49, 2528980), (62, 1998710), (70, 1770286), (98, 1264490), (124, 999355), (140, 885143), (155, 799484), (196, 632245), (217, 571060), (245, 505796), (310, 399742), (434, 285530), (490, 252898), (620, 199871), (868, 142765), (980, 126449), (1085, 114212), (1519, 81580), (2170, 57106), (3038, 40790), (4079, 30380), (4340, 28553), (6076, 20395), (7595, 16316), (8158, 15190)]