161287420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{5309}}^1$

素因数の和:5363

約数の個数: 72

約数和(自身を含む): 406788480

約数和(自身を除く): 245501060

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, 1085, 1519, 2170, 3038, 4340, 5309, 6076, 7595, 10618, 15190, 21236, 26545, 30380, 37163, 53090, 74326, 106180, 148652, 164579, 185815, 260141, 329158, 371630, 520282, 658316, 743260, 822895, 1040564, 1152053, 1300705, 1645790, 2304106, 2601410, 3291580, 4608212, 5202820, 5760265, 8064371, 11520530, 16128742, 23041060, 32257484, 40321855, 80643710, 161287420]

約数ペア:

[(1, 161287420), (2, 80643710), (4, 40321855), (5, 32257484), (7, 23041060), (10, 16128742), (14, 11520530), (20, 8064371), (28, 5760265), (31, 5202820), (35, 4608212), (49, 3291580), (62, 2601410), (70, 2304106), (98, 1645790), (124, 1300705), (140, 1152053), (155, 1040564), (196, 822895), (217, 743260), (245, 658316), (310, 520282), (434, 371630), (490, 329158), (620, 260141), (868, 185815), (980, 164579), (1085, 148652), (1519, 106180), (2170, 74326), (3038, 53090), (4340, 37163), (5309, 30380), (6076, 26545), (7595, 21236), (10618, 15190)]