21243990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1$

素因数の和:525

約数の個数: 64

約数和(自身を含む): 53747712

約数和(自身を除く): 32503722

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 53, 62, 93, 106, 155, 159, 186, 265, 310, 318, 431, 465, 530, 795, 862, 930, 1293, 1590, 1643, 2155, 2586, 3286, 4310, 4929, 6465, 8215, 9858, 12930, 13361, 16430, 22843, 24645, 26722, 40083, 45686, 49290, 66805, 68529, 80166, 114215, 133610, 137058, 200415, 228430, 342645, 400830, 685290, 708133, 1416266, 2124399, 3540665, 4248798, 7081330, 10621995, 21243990]

約数ペア:

[(1, 21243990), (2, 10621995), (3, 7081330), (5, 4248798), (6, 3540665), (10, 2124399), (15, 1416266), (30, 708133), (31, 685290), (53, 400830), (62, 342645), (93, 228430), (106, 200415), (155, 137058), (159, 133610), (186, 114215), (265, 80166), (310, 68529), (318, 66805), (431, 49290), (465, 45686), (530, 40083), (795, 26722), (862, 24645), (930, 22843), (1293, 16430), (1590, 13361), (1643, 12930), (2155, 9858), (2586, 8215), (3286, 6465), (4310, 4929)]