28821940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 74188800

約数和(自身を除く): 45366860

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, 229, 290, 310, 406, 434, 458, 580, 620, 812, 868, 899, 916, 1015, 1085, 1145, 1603, 1798, 2030, 2170, 2290, 3206, 3596, 4060, 4340, 4495, 4580, 6293, 6412, 6641, 7099, 8015, 8990, 12586, 13282, 14198, 16030, 17980, 25172, 26564, 28396, 31465, 32060, 33205, 35495, 46487, 49693, 62930, 66410, 70990, 92974, 99386, 125860, 132820, 141980, 185948, 198772, 205871, 232435, 248465, 411742, 464870, 496930, 823484, 929740, 993860, 1029355, 1441097, 2058710, 2882194, 4117420, 5764388, 7205485, 14410970, 28821940]

約数ペア:

[(1, 28821940), (2, 14410970), (4, 7205485), (5, 5764388), (7, 4117420), (10, 2882194), (14, 2058710), (20, 1441097), (28, 1029355), (29, 993860), (31, 929740), (35, 823484), (58, 496930), (62, 464870), (70, 411742), (116, 248465), (124, 232435), (140, 205871), (145, 198772), (155, 185948), (203, 141980), (217, 132820), (229, 125860), (290, 99386), (310, 92974), (406, 70990), (434, 66410), (458, 62930), (580, 49693), (620, 46487), (812, 35495), (868, 33205), (899, 32060), (916, 31465), (1015, 28396), (1085, 26564), (1145, 25172), (1603, 17980), (1798, 16030), (2030, 14198), (2170, 13282), (2290, 12586), (3206, 8990), (3596, 8015), (4060, 7099), (4340, 6641), (4495, 6412), (4580, 6293)]