21119640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 68256000

約数和(自身を除く): 47136360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 59, 60, 76, 95, 114, 118, 120, 152, 157, 177, 190, 228, 236, 285, 295, 314, 354, 380, 456, 471, 472, 570, 590, 628, 708, 760, 785, 885, 942, 1121, 1140, 1180, 1256, 1416, 1570, 1770, 1884, 2242, 2280, 2355, 2360, 2983, 3140, 3363, 3540, 3768, 4484, 4710, 5605, 5966, 6280, 6726, 7080, 8949, 8968, 9263, 9420, 11210, 11932, 13452, 14915, 16815, 17898, 18526, 18840, 22420, 23864, 26904, 27789, 29830, 33630, 35796, 37052, 44745, 44840, 46315, 55578, 59660, 67260, 71592, 74104, 89490, 92630, 111156, 119320, 134520, 138945, 175997, 178980, 185260, 222312, 277890, 351994, 357960, 370520, 527991, 555780, 703988, 879985, 1055982, 1111560, 1407976, 1759970, 2111964, 2639955, 3519940, 4223928, 5279910, 7039880, 10559820, 21119640]

約数ペア:

[(1, 21119640), (2, 10559820), (3, 7039880), (4, 5279910), (5, 4223928), (6, 3519940), (8, 2639955), (10, 2111964), (12, 1759970), (15, 1407976), (19, 1111560), (20, 1055982), (24, 879985), (30, 703988), (38, 555780), (40, 527991), (57, 370520), (59, 357960), (60, 351994), (76, 277890), (95, 222312), (114, 185260), (118, 178980), (120, 175997), (152, 138945), (157, 134520), (177, 119320), (190, 111156), (228, 92630), (236, 89490), (285, 74104), (295, 71592), (314, 67260), (354, 59660), (380, 55578), (456, 46315), (471, 44840), (472, 44745), (570, 37052), (590, 35796), (628, 33630), (708, 29830), (760, 27789), (785, 26904), (885, 23864), (942, 22420), (1121, 18840), (1140, 18526), (1180, 17898), (1256, 16815), (1416, 14915), (1570, 13452), (1770, 11932), (1884, 11210), (2242, 9420), (2280, 9263), (2355, 8968), (2360, 8949), (2983, 7080), (3140, 6726), (3363, 6280), (3540, 5966), (3768, 5605), (4484, 4710)]