390156700

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{991}}^1$

素因数の和:1163

約数の個数: 72

約数和(自身を含む): 881721344

約数和(自身を除く): 491564644

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 127, 155, 254, 310, 508, 620, 635, 775, 991, 1270, 1550, 1982, 2540, 3100, 3175, 3937, 3964, 4955, 6350, 7874, 9910, 12700, 15748, 19685, 19820, 24775, 30721, 39370, 49550, 61442, 78740, 98425, 99100, 122884, 125857, 153605, 196850, 251714, 307210, 393700, 503428, 614420, 629285, 768025, 1258570, 1536050, 2517140, 3072100, 3146425, 3901567, 6292850, 7803134, 12585700, 15606268, 19507835, 39015670, 78031340, 97539175, 195078350, 390156700]

約数ペア:

[(1, 390156700), (2, 195078350), (4, 97539175), (5, 78031340), (10, 39015670), (20, 19507835), (25, 15606268), (31, 12585700), (50, 7803134), (62, 6292850), (100, 3901567), (124, 3146425), (127, 3072100), (155, 2517140), (254, 1536050), (310, 1258570), (508, 768025), (620, 629285), (635, 614420), (775, 503428), (991, 393700), (1270, 307210), (1550, 251714), (1982, 196850), (2540, 153605), (3100, 125857), (3175, 122884), (3937, 99100), (3964, 98425), (4955, 78740), (6350, 61442), (7874, 49550), (9910, 39370), (12700, 30721), (15748, 24775), (19685, 19820)]