388403960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1543}}^1$

素因数の和:1621

約数の個数: 128

約数和(自身を含む): 1067212800

約数和(自身を除く): 678808840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 56, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 232, 248, 280, 290, 310, 406, 434, 580, 620, 812, 868, 899, 1015, 1085, 1160, 1240, 1543, 1624, 1736, 1798, 2030, 2170, 3086, 3596, 4060, 4340, 4495, 6172, 6293, 7192, 7715, 8120, 8680, 8990, 10801, 12344, 12586, 15430, 17980, 21602, 25172, 30860, 31465, 35960, 43204, 44747, 47833, 50344, 54005, 61720, 62930, 86408, 89494, 95666, 108010, 125860, 178988, 191332, 216020, 223735, 239165, 251720, 313229, 334831, 357976, 382664, 432040, 447470, 478330, 626458, 669662, 894940, 956660, 1252916, 1339324, 1387157, 1566145, 1674155, 1789880, 1913320, 2505832, 2678648, 2774314, 3132290, 3348310, 5548628, 6264580, 6696620, 6935785, 9710099, 11097256, 12529160, 13393240, 13871570, 19420198, 27743140, 38840396, 48550495, 55486280, 77680792, 97100990, 194201980, 388403960]

約数ペア:

[(1, 388403960), (2, 194201980), (4, 97100990), (5, 77680792), (7, 55486280), (8, 48550495), (10, 38840396), (14, 27743140), (20, 19420198), (28, 13871570), (29, 13393240), (31, 12529160), (35, 11097256), (40, 9710099), (56, 6935785), (58, 6696620), (62, 6264580), (70, 5548628), (116, 3348310), (124, 3132290), (140, 2774314), (145, 2678648), (155, 2505832), (203, 1913320), (217, 1789880), (232, 1674155), (248, 1566145), (280, 1387157), (290, 1339324), (310, 1252916), (406, 956660), (434, 894940), (580, 669662), (620, 626458), (812, 478330), (868, 447470), (899, 432040), (1015, 382664), (1085, 357976), (1160, 334831), (1240, 313229), (1543, 251720), (1624, 239165), (1736, 223735), (1798, 216020), (2030, 191332), (2170, 178988), (3086, 125860), (3596, 108010), (4060, 95666), (4340, 89494), (4495, 86408), (6172, 62930), (6293, 61720), (7192, 54005), (7715, 50344), (8120, 47833), (8680, 44747), (8990, 43204), (10801, 35960), (12344, 31465), (12586, 30860), (15430, 25172), (17980, 21602)]