420130180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:565

約数の個数: 96

約数和(自身を含む): 971937792

約数和(自身を除く): 551807612

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 61, 68, 85, 94, 122, 170, 188, 235, 244, 305, 340, 431, 470, 610, 799, 862, 940, 1037, 1220, 1598, 1724, 2074, 2155, 2867, 3196, 3995, 4148, 4310, 5185, 5734, 7327, 7990, 8620, 10370, 11468, 14335, 14654, 15980, 20257, 20740, 26291, 28670, 29308, 36635, 40514, 48739, 52582, 57340, 73270, 81028, 97478, 101285, 105164, 131455, 146540, 194956, 202570, 243695, 262910, 344369, 405140, 446947, 487390, 525820, 688738, 893894, 974780, 1235677, 1377476, 1721845, 1787788, 2234735, 2471354, 3443690, 4469470, 4942708, 6178385, 6887380, 8938940, 12356770, 21006509, 24713540, 42013018, 84026036, 105032545, 210065090, 420130180]

約数ペア:

[(1, 420130180), (2, 210065090), (4, 105032545), (5, 84026036), (10, 42013018), (17, 24713540), (20, 21006509), (34, 12356770), (47, 8938940), (61, 6887380), (68, 6178385), (85, 4942708), (94, 4469470), (122, 3443690), (170, 2471354), (188, 2234735), (235, 1787788), (244, 1721845), (305, 1377476), (340, 1235677), (431, 974780), (470, 893894), (610, 688738), (799, 525820), (862, 487390), (940, 446947), (1037, 405140), (1220, 344369), (1598, 262910), (1724, 243695), (2074, 202570), (2155, 194956), (2867, 146540), (3196, 131455), (3995, 105164), (4148, 101285), (4310, 97478), (5185, 81028), (5734, 73270), (7327, 57340), (7990, 52582), (8620, 48739), (10370, 40514), (11468, 36635), (14335, 29308), (14654, 28670), (15980, 26291), (20257, 20740)]