15354920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 128

約数和(自身を含む): 42854400

約数和(自身を除く): 27499480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 56, 58, 61, 62, 70, 116, 122, 124, 140, 145, 155, 203, 217, 232, 244, 248, 280, 290, 305, 310, 406, 427, 434, 488, 580, 610, 620, 812, 854, 868, 899, 1015, 1085, 1160, 1220, 1240, 1624, 1708, 1736, 1769, 1798, 1891, 2030, 2135, 2170, 2440, 3416, 3538, 3596, 3782, 4060, 4270, 4340, 4495, 6293, 7076, 7192, 7564, 8120, 8540, 8680, 8845, 8990, 9455, 12383, 12586, 13237, 14152, 15128, 17080, 17690, 17980, 18910, 24766, 25172, 26474, 31465, 35380, 35960, 37820, 49532, 50344, 52948, 54839, 61915, 62930, 66185, 70760, 75640, 99064, 105896, 109678, 123830, 125860, 132370, 219356, 247660, 251720, 264740, 274195, 383873, 438712, 495320, 529480, 548390, 767746, 1096780, 1535492, 1919365, 2193560, 3070984, 3838730, 7677460, 15354920]

約数ペア:

[(1, 15354920), (2, 7677460), (4, 3838730), (5, 3070984), (7, 2193560), (8, 1919365), (10, 1535492), (14, 1096780), (20, 767746), (28, 548390), (29, 529480), (31, 495320), (35, 438712), (40, 383873), (56, 274195), (58, 264740), (61, 251720), (62, 247660), (70, 219356), (116, 132370), (122, 125860), (124, 123830), (140, 109678), (145, 105896), (155, 99064), (203, 75640), (217, 70760), (232, 66185), (244, 62930), (248, 61915), (280, 54839), (290, 52948), (305, 50344), (310, 49532), (406, 37820), (427, 35960), (434, 35380), (488, 31465), (580, 26474), (610, 25172), (620, 24766), (812, 18910), (854, 17980), (868, 17690), (899, 17080), (1015, 15128), (1085, 14152), (1160, 13237), (1220, 12586), (1240, 12383), (1624, 9455), (1708, 8990), (1736, 8845), (1769, 8680), (1798, 8540), (1891, 8120), (2030, 7564), (2135, 7192), (2170, 7076), (2440, 6293), (3416, 4495), (3538, 4340), (3596, 4270), (3782, 4060)]