21401118

素因数分解:

$2^1\times 3^3\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 49550400

約数和(自身を除く): 28149282

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 73, 89, 122, 146, 178, 183, 219, 267, 366, 438, 534, 549, 657, 801, 1098, 1314, 1602, 1647, 1971, 2403, 3294, 3942, 4453, 4806, 5429, 6497, 8906, 10858, 12994, 13359, 16287, 19491, 26718, 32574, 38982, 40077, 48861, 58473, 80154, 97722, 116946, 120231, 146583, 175419, 240462, 293166, 350838, 396317, 792634, 1188951, 2377902, 3566853, 7133706, 10700559, 21401118]

約数ペア:

[(1, 21401118), (2, 10700559), (3, 7133706), (6, 3566853), (9, 2377902), (18, 1188951), (27, 792634), (54, 396317), (61, 350838), (73, 293166), (89, 240462), (122, 175419), (146, 146583), (178, 120231), (183, 116946), (219, 97722), (267, 80154), (366, 58473), (438, 48861), (534, 40077), (549, 38982), (657, 32574), (801, 26718), (1098, 19491), (1314, 16287), (1602, 13359), (1647, 12994), (1971, 10858), (2403, 8906), (3294, 6497), (3942, 5429), (4453, 4806)]