20878568260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1\times {\mathrm{1549}}^1$

素因数の和:2077

約数の個数: 96

約数和(自身を含む): 48259411200

約数和(自身を除く): 27380842940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 311, 394, 622, 788, 985, 1244, 1549, 1555, 1970, 2167, 3098, 3110, 3421, 3940, 4334, 6196, 6220, 6842, 7745, 8668, 10835, 13684, 15490, 17039, 17105, 21670, 30980, 34078, 34210, 43340, 61267, 68156, 68420, 85195, 122534, 170390, 245068, 305153, 306335, 340780, 481739, 610306, 612670, 673937, 963478, 1220612, 1225340, 1347874, 1525765, 1926956, 2408695, 2695748, 3051530, 3356683, 3369685, 4817390, 5299129, 6103060, 6713366, 6739370, 9634780, 10598258, 13426732, 13478740, 16783415, 21196516, 26495645, 33566830, 52991290, 67133660, 94902583, 105982580, 189805166, 379610332, 474512915, 949025830, 1043928413, 1898051660, 2087856826, 4175713652, 5219642065, 10439284130, 20878568260]

約数ペア:

[(1, 20878568260), (2, 10439284130), (4, 5219642065), (5, 4175713652), (10, 2087856826), (11, 1898051660), (20, 1043928413), (22, 949025830), (44, 474512915), (55, 379610332), (110, 189805166), (197, 105982580), (220, 94902583), (311, 67133660), (394, 52991290), (622, 33566830), (788, 26495645), (985, 21196516), (1244, 16783415), (1549, 13478740), (1555, 13426732), (1970, 10598258), (2167, 9634780), (3098, 6739370), (3110, 6713366), (3421, 6103060), (3940, 5299129), (4334, 4817390), (6196, 3369685), (6220, 3356683), (6842, 3051530), (7745, 2695748), (8668, 2408695), (10835, 1926956), (13684, 1525765), (15490, 1347874), (17039, 1225340), (17105, 1220612), (21670, 963478), (30980, 673937), (34078, 612670), (34210, 610306), (43340, 481739), (61267, 340780), (68156, 306335), (68420, 305153), (85195, 245068), (122534, 170390)]