388889420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{503}}^1$

素因数の和:615

約数の個数: 96

約数和(自身を含む): 894136320

約数和(自身を除く): 505246900

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 43, 58, 62, 86, 116, 124, 145, 155, 172, 215, 290, 310, 430, 503, 580, 620, 860, 899, 1006, 1247, 1333, 1798, 2012, 2494, 2515, 2666, 3596, 4495, 4988, 5030, 5332, 6235, 6665, 8990, 10060, 12470, 13330, 14587, 15593, 17980, 21629, 24940, 26660, 29174, 31186, 38657, 43258, 58348, 62372, 72935, 77314, 77965, 86516, 108145, 145870, 154628, 155930, 193285, 216290, 291740, 311860, 386570, 432580, 452197, 627241, 670499, 773140, 904394, 1254482, 1340998, 1808788, 2260985, 2508964, 2681996, 3136205, 3352495, 4521970, 6272410, 6704990, 9043940, 12544820, 13409980, 19444471, 38888942, 77777884, 97222355, 194444710, 388889420]

約数ペア:

[(1, 388889420), (2, 194444710), (4, 97222355), (5, 77777884), (10, 38888942), (20, 19444471), (29, 13409980), (31, 12544820), (43, 9043940), (58, 6704990), (62, 6272410), (86, 4521970), (116, 3352495), (124, 3136205), (145, 2681996), (155, 2508964), (172, 2260985), (215, 1808788), (290, 1340998), (310, 1254482), (430, 904394), (503, 773140), (580, 670499), (620, 627241), (860, 452197), (899, 432580), (1006, 386570), (1247, 311860), (1333, 291740), (1798, 216290), (2012, 193285), (2494, 155930), (2515, 154628), (2666, 145870), (3596, 108145), (4495, 86516), (4988, 77965), (5030, 77314), (5332, 72935), (6235, 62372), (6665, 58348), (8990, 43258), (10060, 38657), (12470, 31186), (13330, 29174), (14587, 26660), (15593, 24940), (17980, 21629)]