215501420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1\times {\mathrm{809}}^1$

素因数の和:1538

約数の個数: 48

約数和(自身を含む): 477640800

約数和(自身を除く): 262139380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 701, 809, 1402, 1618, 2804, 3236, 3505, 4045, 7010, 8090, 13319, 14020, 15371, 16180, 26638, 30742, 53276, 61484, 66595, 76855, 133190, 153710, 266380, 307420, 567109, 1134218, 2268436, 2835545, 5671090, 10775071, 11342180, 21550142, 43100284, 53875355, 107750710, 215501420]

約数ペア:

[(1, 215501420), (2, 107750710), (4, 53875355), (5, 43100284), (10, 21550142), (19, 11342180), (20, 10775071), (38, 5671090), (76, 2835545), (95, 2268436), (190, 1134218), (380, 567109), (701, 307420), (809, 266380), (1402, 153710), (1618, 133190), (2804, 76855), (3236, 66595), (3505, 61484), (4045, 53276), (7010, 30742), (8090, 26638), (13319, 16180), (14020, 15371)]