642320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:88

約数の個数: 80

約数和(自身を含む): 1809408

約数和(自身を除く): 1167088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 37, 40, 56, 62, 70, 74, 80, 112, 124, 140, 148, 155, 185, 217, 248, 259, 280, 296, 310, 370, 434, 496, 518, 560, 592, 620, 740, 868, 1036, 1085, 1147, 1240, 1295, 1480, 1736, 2072, 2170, 2294, 2480, 2590, 2960, 3472, 4144, 4340, 4588, 5180, 5735, 8029, 8680, 9176, 10360, 11470, 16058, 17360, 18352, 20720, 22940, 32116, 40145, 45880, 64232, 80290, 91760, 128464, 160580, 321160, 642320]

約数ペア:

[(1, 642320), (2, 321160), (4, 160580), (5, 128464), (7, 91760), (8, 80290), (10, 64232), (14, 45880), (16, 40145), (20, 32116), (28, 22940), (31, 20720), (35, 18352), (37, 17360), (40, 16058), (56, 11470), (62, 10360), (70, 9176), (74, 8680), (80, 8029), (112, 5735), (124, 5180), (140, 4588), (148, 4340), (155, 4144), (185, 3472), (217, 2960), (248, 2590), (259, 2480), (280, 2294), (296, 2170), (310, 2072), (370, 1736), (434, 1480), (496, 1295), (518, 1240), (560, 1147), (592, 1085), (620, 1036), (740, 868)]