638966860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{22483}}^1$

素因数の和:22535

約数の個数: 72

約数和(自身を含む): 1614800880

約数和(自身を除く): 975834020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 406, 490, 580, 812, 980, 1015, 1421, 2030, 2842, 4060, 5684, 7105, 14210, 22483, 28420, 44966, 89932, 112415, 157381, 224830, 314762, 449660, 629524, 652007, 786905, 1101667, 1304014, 1573810, 2203334, 2608028, 3147620, 3260035, 4406668, 4564049, 5508335, 6520070, 9128098, 11016670, 13040140, 18256196, 22033340, 22820245, 31948343, 45640490, 63896686, 91280980, 127793372, 159741715, 319483430, 638966860]

約数ペア:

[(1, 638966860), (2, 319483430), (4, 159741715), (5, 127793372), (7, 91280980), (10, 63896686), (14, 45640490), (20, 31948343), (28, 22820245), (29, 22033340), (35, 18256196), (49, 13040140), (58, 11016670), (70, 9128098), (98, 6520070), (116, 5508335), (140, 4564049), (145, 4406668), (196, 3260035), (203, 3147620), (245, 2608028), (290, 2203334), (406, 1573810), (490, 1304014), (580, 1101667), (812, 786905), (980, 652007), (1015, 629524), (1421, 449660), (2030, 314762), (2842, 224830), (4060, 157381), (5684, 112415), (7105, 89932), (14210, 44966), (22483, 28420)]