51311820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:620

約数の個数: 144

約数和(自身を含む): 172827648

約数和(自身を除く): 121515828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 310, 372, 420, 434, 465, 490, 563, 588, 620, 651, 735, 868, 930, 980, 1085, 1126, 1302, 1470, 1519, 1689, 1860, 2170, 2252, 2604, 2815, 2940, 3038, 3255, 3378, 3941, 4340, 4557, 5630, 6076, 6510, 6756, 7595, 7882, 8445, 9114, 11260, 11823, 13020, 15190, 15764, 16890, 17453, 18228, 19705, 22785, 23646, 27587, 30380, 33780, 34906, 39410, 45570, 47292, 52359, 55174, 59115, 69812, 78820, 82761, 87265, 91140, 104718, 110348, 118230, 122171, 137935, 165522, 174530, 209436, 236460, 244342, 261795, 275870, 331044, 349060, 366513, 413805, 488684, 523590, 551740, 610855, 733026, 827610, 855197, 1047180, 1221710, 1466052, 1655220, 1710394, 1832565, 2443420, 2565591, 3420788, 3665130, 4275985, 5131182, 7330260, 8551970, 10262364, 12827955, 17103940, 25655910, 51311820]

約数ペア:

[(1, 51311820), (2, 25655910), (3, 17103940), (4, 12827955), (5, 10262364), (6, 8551970), (7, 7330260), (10, 5131182), (12, 4275985), (14, 3665130), (15, 3420788), (20, 2565591), (21, 2443420), (28, 1832565), (30, 1710394), (31, 1655220), (35, 1466052), (42, 1221710), (49, 1047180), (60, 855197), (62, 827610), (70, 733026), (84, 610855), (93, 551740), (98, 523590), (105, 488684), (124, 413805), (140, 366513), (147, 349060), (155, 331044), (186, 275870), (196, 261795), (210, 244342), (217, 236460), (245, 209436), (294, 174530), (310, 165522), (372, 137935), (420, 122171), (434, 118230), (465, 110348), (490, 104718), (563, 91140), (588, 87265), (620, 82761), (651, 78820), (735, 69812), (868, 59115), (930, 55174), (980, 52359), (1085, 47292), (1126, 45570), (1302, 39410), (1470, 34906), (1519, 33780), (1689, 30380), (1860, 27587), (2170, 23646), (2252, 22785), (2604, 19705), (2815, 18228), (2940, 17453), (3038, 16890), (3255, 15764), (3378, 15190), (3941, 13020), (4340, 11823), (4557, 11260), (5630, 9114), (6076, 8445), (6510, 7882), (6756, 7595)]