31017980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1021}}^1$

素因数の和:1075

約数の個数: 72

約数和(自身を含む): 78293376

約数和(自身を除く): 47275396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1021, 1085, 1519, 2042, 2170, 3038, 4084, 4340, 5105, 6076, 7147, 7595, 10210, 14294, 15190, 20420, 28588, 30380, 31651, 35735, 50029, 63302, 71470, 100058, 126604, 142940, 158255, 200116, 221557, 250145, 316510, 443114, 500290, 633020, 886228, 1000580, 1107785, 1550899, 2215570, 3101798, 4431140, 6203596, 7754495, 15508990, 31017980]

約数ペア:

[(1, 31017980), (2, 15508990), (4, 7754495), (5, 6203596), (7, 4431140), (10, 3101798), (14, 2215570), (20, 1550899), (28, 1107785), (31, 1000580), (35, 886228), (49, 633020), (62, 500290), (70, 443114), (98, 316510), (124, 250145), (140, 221557), (155, 200116), (196, 158255), (217, 142940), (245, 126604), (310, 100058), (434, 71470), (490, 63302), (620, 50029), (868, 35735), (980, 31651), (1021, 30380), (1085, 28588), (1519, 20420), (2042, 15190), (2170, 14294), (3038, 10210), (4084, 7595), (4340, 7147), (5105, 6076)]