21215688

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1283}}^1$

素因数の和:1358

約数の個数: 64

約数和(自身を含む): 58242240

約数和(自身を除く): 37026552

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 53, 78, 104, 106, 156, 159, 212, 312, 318, 424, 636, 689, 1272, 1283, 1378, 2067, 2566, 2756, 3849, 4134, 5132, 5512, 7698, 8268, 10264, 15396, 16536, 16679, 30792, 33358, 50037, 66716, 67999, 100074, 133432, 135998, 200148, 203997, 271996, 400296, 407994, 543992, 815988, 883987, 1631976, 1767974, 2651961, 3535948, 5303922, 7071896, 10607844, 21215688]

約数ペア:

[(1, 21215688), (2, 10607844), (3, 7071896), (4, 5303922), (6, 3535948), (8, 2651961), (12, 1767974), (13, 1631976), (24, 883987), (26, 815988), (39, 543992), (52, 407994), (53, 400296), (78, 271996), (104, 203997), (106, 200148), (156, 135998), (159, 133432), (212, 100074), (312, 67999), (318, 66716), (424, 50037), (636, 33358), (689, 30792), (1272, 16679), (1283, 16536), (1378, 15396), (2067, 10264), (2566, 8268), (2756, 7698), (3849, 5512), (4134, 5132)]