21919830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 54867456

約数和(自身を除く): 32947626

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 71, 82, 123, 142, 205, 213, 246, 251, 355, 410, 426, 502, 615, 710, 753, 1065, 1230, 1255, 1506, 2130, 2510, 2911, 3765, 5822, 7530, 8733, 10291, 14555, 17466, 17821, 20582, 29110, 30873, 35642, 43665, 51455, 53463, 61746, 87330, 89105, 102910, 106926, 154365, 178210, 267315, 308730, 534630, 730661, 1461322, 2191983, 3653305, 4383966, 7306610, 10959915, 21919830]

約数ペア:

[(1, 21919830), (2, 10959915), (3, 7306610), (5, 4383966), (6, 3653305), (10, 2191983), (15, 1461322), (30, 730661), (41, 534630), (71, 308730), (82, 267315), (123, 178210), (142, 154365), (205, 106926), (213, 102910), (246, 89105), (251, 87330), (355, 61746), (410, 53463), (426, 51455), (502, 43665), (615, 35642), (710, 30873), (753, 29110), (1065, 20582), (1230, 17821), (1255, 17466), (1506, 14555), (2130, 10291), (2510, 8733), (2911, 7530), (3765, 5822)]