21430480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{613}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 54817920

約数和(自身を除く): 33387440

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 368, 380, 437, 460, 613, 760, 874, 920, 1226, 1520, 1748, 1840, 2185, 2452, 3065, 3496, 4370, 4904, 6130, 6992, 8740, 9808, 11647, 12260, 14099, 17480, 23294, 24520, 28198, 34960, 46588, 49040, 56396, 58235, 70495, 93176, 112792, 116470, 140990, 186352, 225584, 232940, 267881, 281980, 465880, 535762, 563960, 931760, 1071524, 1127920, 1339405, 2143048, 2678810, 4286096, 5357620, 10715240, 21430480]

約数ペア:

[(1, 21430480), (2, 10715240), (4, 5357620), (5, 4286096), (8, 2678810), (10, 2143048), (16, 1339405), (19, 1127920), (20, 1071524), (23, 931760), (38, 563960), (40, 535762), (46, 465880), (76, 281980), (80, 267881), (92, 232940), (95, 225584), (115, 186352), (152, 140990), (184, 116470), (190, 112792), (230, 93176), (304, 70495), (368, 58235), (380, 56396), (437, 49040), (460, 46588), (613, 34960), (760, 28198), (874, 24520), (920, 23294), (1226, 17480), (1520, 14099), (1748, 12260), (1840, 11647), (2185, 9808), (2452, 8740), (3065, 6992), (3496, 6130), (4370, 4904)]