77681660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2557}}^1$

素因数の和:2611

約数の個数: 72

約数和(自身を含む): 195963264

約数和(自身を除く): 118281604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 2557, 3038, 4340, 5114, 6076, 7595, 10228, 12785, 15190, 17899, 25570, 30380, 35798, 51140, 71596, 79267, 89495, 125293, 158534, 178990, 250586, 317068, 357980, 396335, 501172, 554869, 626465, 792670, 1109738, 1252930, 1585340, 2219476, 2505860, 2774345, 3884083, 5548690, 7768166, 11097380, 15536332, 19420415, 38840830, 77681660]

約数ペア:

[(1, 77681660), (2, 38840830), (4, 19420415), (5, 15536332), (7, 11097380), (10, 7768166), (14, 5548690), (20, 3884083), (28, 2774345), (31, 2505860), (35, 2219476), (49, 1585340), (62, 1252930), (70, 1109738), (98, 792670), (124, 626465), (140, 554869), (155, 501172), (196, 396335), (217, 357980), (245, 317068), (310, 250586), (434, 178990), (490, 158534), (620, 125293), (868, 89495), (980, 79267), (1085, 71596), (1519, 51140), (2170, 35798), (2557, 30380), (3038, 25570), (4340, 17899), (5114, 15190), (6076, 12785), (7595, 10228)]