20355917.000000000

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1459}}^1$

素因数の和:1535

約数の個数: 96

約数和(自身を含む): 470937600

約数和(自身を除く): 287307860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 31, 35, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 290, 310, 406, 434, 580, 620, 812, 868, 899, 1015, 1085, 1459, 1798, 2030, 2170, 2918, 3596, 4060, 4340, 4495, 5836, 6293, 7295, 8990, 10213, 12586, 14590, 17980, 20426, 25172, 29180, 31465, 40852, 42311, 45229, 51065, 62930, 84622, 90458, 102130, 125860, 169244, 180916, 204260, 211555, 226145, 296177, 316603, 423110, 452290, 592354, 633206, 846220, 904580, 1184708, 1266412, 1311641, 1480885, 1583015, 2623282, 2961770, 3166030, 5246564, 5923540, 6332060, 6558205, 9181487, 13116410, 18362974, 26232820, 36725948, 45907435, 91814870, 183629740]

約数ペア:

[(1, 183629740), (2, 91814870), (4, 45907435), (5, 36725948), (7, 26232820), (10, 18362974), (14, 13116410), (20, 9181487), (28, 6558205), (29, 6332060), (31, 5923540), (35, 5246564), (58, 3166030), (62, 2961770), (70, 2623282), (116, 1583015), (124, 1480885), (140, 1311641), (145, 1266412), (155, 1184708), (203, 904580), (217, 846220), (290, 633206), (310, 592354), (406, 452290), (434, 423110), (580, 316603), (620, 296177), (812, 226145), (868, 211555), (899, 204260), (1015, 180916), (1085, 169244), (1459, 125860), (1798, 102130), (2030, 90458), (2170, 84622), (2918, 62930), (3596, 51065), (4060, 45229), (4340, 42311), (4495, 40852), (5836, 31465), (6293, 29180), (7295, 25172), (8990, 20426), (10213, 17980), (12586, 14590)]