642002560

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32359}}^1$

素因数の和:32409

約数の個数: 64

約数和(自身を含む): 1584345600

約数和(自身を除く): 942343040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19840, 32359, 64718, 129436, 161795, 258872, 323590, 517744, 647180, 1003129, 1035488, 1294360, 2006258, 2070976, 2588720, 4012516, 4141952, 5015645, 5177440, 8025032, 10031290, 10354880, 16050064, 20062580, 20709760, 32100128, 40125160, 64200256, 80250320, 128400512, 160500640, 321001280, 642002560]

約数ペア:

[(1, 642002560), (2, 321001280), (4, 160500640), (5, 128400512), (8, 80250320), (10, 64200256), (16, 40125160), (20, 32100128), (31, 20709760), (32, 20062580), (40, 16050064), (62, 10354880), (64, 10031290), (80, 8025032), (124, 5177440), (128, 5015645), (155, 4141952), (160, 4012516), (248, 2588720), (310, 2070976), (320, 2006258), (496, 1294360), (620, 1035488), (640, 1003129), (992, 647180), (1240, 517744), (1984, 323590), (2480, 258872), (3968, 161795), (4960, 129436), (9920, 64718), (19840, 32359)]