21927060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1997}}^1$

素因数の和:2073

約数の個数: 72

約数和(自身を含む): 67636296

約数和(自身を除く): 45709236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 1997, 2196, 2745, 3660, 3994, 5490, 5991, 7988, 9985, 10980, 11982, 17973, 19970, 23964, 29955, 35946, 39940, 59910, 71892, 89865, 119820, 121817, 179730, 243634, 359460, 365451, 487268, 609085, 730902, 1096353, 1218170, 1461804, 1827255, 2192706, 2436340, 3654510, 4385412, 5481765, 7309020, 10963530, 21927060]

約数ペア:

[(1, 21927060), (2, 10963530), (3, 7309020), (4, 5481765), (5, 4385412), (6, 3654510), (9, 2436340), (10, 2192706), (12, 1827255), (15, 1461804), (18, 1218170), (20, 1096353), (30, 730902), (36, 609085), (45, 487268), (60, 365451), (61, 359460), (90, 243634), (122, 179730), (180, 121817), (183, 119820), (244, 89865), (305, 71892), (366, 59910), (549, 39940), (610, 35946), (732, 29955), (915, 23964), (1098, 19970), (1220, 17973), (1830, 11982), (1997, 10980), (2196, 9985), (2745, 7988), (3660, 5991), (3994, 5490)]