79776640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4021}}^1$

素因数の和:4071

約数の個数: 64

約数和(自身を含む): 196917120

約数和(自身を除く): 117140480

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, 4021, 4960, 8042, 9920, 16084, 19840, 20105, 32168, 40210, 64336, 80420, 124651, 128672, 160840, 249302, 257344, 321680, 498604, 514688, 623255, 643360, 997208, 1246510, 1286720, 1994416, 2493020, 2573440, 3988832, 4986040, 7977664, 9972080, 15955328, 19944160, 39888320, 79776640]

約数ペア:

[(1, 79776640), (2, 39888320), (4, 19944160), (5, 15955328), (8, 9972080), (10, 7977664), (16, 4986040), (20, 3988832), (31, 2573440), (32, 2493020), (40, 1994416), (62, 1286720), (64, 1246510), (80, 997208), (124, 643360), (128, 623255), (155, 514688), (160, 498604), (248, 321680), (310, 257344), (320, 249302), (496, 160840), (620, 128672), (640, 124651), (992, 80420), (1240, 64336), (1984, 40210), (2480, 32168), (3968, 20105), (4021, 19840), (4960, 16084), (8042, 9920)]