78638320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:938

約数の個数: 80

約数和(自身を含む): 194059008

約数和(自身を除く): 115420688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 248, 296, 310, 370, 496, 592, 620, 740, 857, 1147, 1240, 1480, 1714, 2294, 2480, 2960, 3428, 4285, 4588, 5735, 6856, 8570, 9176, 11470, 13712, 17140, 18352, 22940, 26567, 31709, 34280, 45880, 53134, 63418, 68560, 91760, 106268, 126836, 132835, 158545, 212536, 253672, 265670, 317090, 425072, 507344, 531340, 634180, 982979, 1062680, 1268360, 1965958, 2125360, 2536720, 3931916, 4914895, 7863832, 9829790, 15727664, 19659580, 39319160, 78638320]

約数ペア:

[(1, 78638320), (2, 39319160), (4, 19659580), (5, 15727664), (8, 9829790), (10, 7863832), (16, 4914895), (20, 3931916), (31, 2536720), (37, 2125360), (40, 1965958), (62, 1268360), (74, 1062680), (80, 982979), (124, 634180), (148, 531340), (155, 507344), (185, 425072), (248, 317090), (296, 265670), (310, 253672), (370, 212536), (496, 158545), (592, 132835), (620, 126836), (740, 106268), (857, 91760), (1147, 68560), (1240, 63418), (1480, 53134), (1714, 45880), (2294, 34280), (2480, 31709), (2960, 26567), (3428, 22940), (4285, 18352), (4588, 17140), (5735, 13712), (6856, 11470), (8570, 9176)]