25271820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:700

約数の個数: 144

約数和(自身を含む): 90574848

約数和(自身を除く): 65303028

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 558, 620, 630, 647, 651, 868, 930, 1085, 1116, 1260, 1294, 1302, 1395, 1860, 1941, 1953, 2170, 2588, 2604, 2790, 3235, 3255, 3882, 3906, 4340, 4529, 5580, 5823, 6470, 6510, 7764, 7812, 9058, 9705, 9765, 11646, 12940, 13020, 13587, 18116, 19410, 19530, 20057, 22645, 23292, 27174, 29115, 38820, 39060, 40114, 40761, 45290, 54348, 58230, 60171, 67935, 80228, 81522, 90580, 100285, 116460, 120342, 135870, 140399, 163044, 180513, 200570, 203805, 240684, 271740, 280798, 300855, 361026, 401140, 407610, 421197, 561596, 601710, 701995, 722052, 815220, 842394, 902565, 1203420, 1263591, 1403990, 1684788, 1805130, 2105985, 2527182, 2807980, 3610260, 4211970, 5054364, 6317955, 8423940, 12635910, 25271820]

約数ペア:

[(1, 25271820), (2, 12635910), (3, 8423940), (4, 6317955), (5, 5054364), (6, 4211970), (7, 3610260), (9, 2807980), (10, 2527182), (12, 2105985), (14, 1805130), (15, 1684788), (18, 1403990), (20, 1263591), (21, 1203420), (28, 902565), (30, 842394), (31, 815220), (35, 722052), (36, 701995), (42, 601710), (45, 561596), (60, 421197), (62, 407610), (63, 401140), (70, 361026), (84, 300855), (90, 280798), (93, 271740), (105, 240684), (124, 203805), (126, 200570), (140, 180513), (155, 163044), (180, 140399), (186, 135870), (210, 120342), (217, 116460), (252, 100285), (279, 90580), (310, 81522), (315, 80228), (372, 67935), (420, 60171), (434, 58230), (465, 54348), (558, 45290), (620, 40761), (630, 40114), (647, 39060), (651, 38820), (868, 29115), (930, 27174), (1085, 23292), (1116, 22645), (1260, 20057), (1294, 19530), (1302, 19410), (1395, 18116), (1860, 13587), (1941, 13020), (1953, 12940), (2170, 11646), (2588, 9765), (2604, 9705), (2790, 9058), (3235, 7812), (3255, 7764), (3882, 6510), (3906, 6470), (4340, 5823), (4529, 5580)]