394940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:67

約数の個数: 72

約数和(自身を含む): 1072512

約数和(自身を除く): 677572

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 49, 52, 62, 65, 70, 91, 98, 124, 130, 140, 155, 182, 196, 217, 245, 260, 310, 364, 403, 434, 455, 490, 620, 637, 806, 868, 910, 980, 1085, 1274, 1519, 1612, 1820, 2015, 2170, 2548, 2821, 3038, 3185, 4030, 4340, 5642, 6076, 6370, 7595, 8060, 11284, 12740, 14105, 15190, 19747, 28210, 30380, 39494, 56420, 78988, 98735, 197470, 394940]

約数ペア:

[(1, 394940), (2, 197470), (4, 98735), (5, 78988), (7, 56420), (10, 39494), (13, 30380), (14, 28210), (20, 19747), (26, 15190), (28, 14105), (31, 12740), (35, 11284), (49, 8060), (52, 7595), (62, 6370), (65, 6076), (70, 5642), (91, 4340), (98, 4030), (124, 3185), (130, 3038), (140, 2821), (155, 2548), (182, 2170), (196, 2015), (217, 1820), (245, 1612), (260, 1519), (310, 1274), (364, 1085), (403, 980), (434, 910), (455, 868), (490, 806), (620, 637)]