15827980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:575

約数の個数: 72

約数和(自身を含む): 39989376

約数和(自身を除く): 24161396

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, 521, 620, 868, 980, 1042, 1085, 1519, 2084, 2170, 2605, 3038, 3647, 4340, 5210, 6076, 7294, 7595, 10420, 14588, 15190, 16151, 18235, 25529, 30380, 32302, 36470, 51058, 64604, 72940, 80755, 102116, 113057, 127645, 161510, 226114, 255290, 323020, 452228, 510580, 565285, 791399, 1130570, 1582798, 2261140, 3165596, 3956995, 7913990, 15827980]

約数ペア:

[(1, 15827980), (2, 7913990), (4, 3956995), (5, 3165596), (7, 2261140), (10, 1582798), (14, 1130570), (20, 791399), (28, 565285), (31, 510580), (35, 452228), (49, 323020), (62, 255290), (70, 226114), (98, 161510), (124, 127645), (140, 113057), (155, 102116), (196, 80755), (217, 72940), (245, 64604), (310, 51058), (434, 36470), (490, 32302), (521, 30380), (620, 25529), (868, 18235), (980, 16151), (1042, 15190), (1085, 14588), (1519, 10420), (2084, 7595), (2170, 7294), (2605, 6076), (3038, 5210), (3647, 4340)]