20697019010

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{15817}}^1$

素因数の和:16011

約数の個数: 64

約数和(自身を含む): 40180250880

約数和(自身を除く): 19483231870

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 97, 142, 190, 194, 355, 485, 710, 970, 1349, 1843, 2698, 3686, 6745, 6887, 9215, 13490, 13774, 15817, 18430, 31634, 34435, 68870, 79085, 130853, 158170, 261706, 300523, 601046, 654265, 1123007, 1308530, 1502615, 1534249, 2246014, 3005230, 3068498, 5615035, 7671245, 11230070, 15342490, 21337133, 29150731, 42674266, 58301462, 106685665, 108931679, 145753655, 213371330, 217863358, 291507310, 544658395, 1089316790, 2069701901, 4139403802, 10348509505, 20697019010]

約数ペア:

[(1, 20697019010), (2, 10348509505), (5, 4139403802), (10, 2069701901), (19, 1089316790), (38, 544658395), (71, 291507310), (95, 217863358), (97, 213371330), (142, 145753655), (190, 108931679), (194, 106685665), (355, 58301462), (485, 42674266), (710, 29150731), (970, 21337133), (1349, 15342490), (1843, 11230070), (2698, 7671245), (3686, 5615035), (6745, 3068498), (6887, 3005230), (9215, 2246014), (13490, 1534249), (13774, 1502615), (15817, 1308530), (18430, 1123007), (31634, 654265), (34435, 601046), (68870, 300523), (79085, 261706), (130853, 158170)]