71403780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:338

約数の個数: 144

約数和(自身を含む): 235569600

約数和(自身を除く): 164165820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 149, 163, 196, 210, 245, 294, 298, 326, 420, 447, 489, 490, 588, 596, 652, 735, 745, 815, 894, 978, 980, 1043, 1141, 1470, 1490, 1630, 1788, 1956, 2086, 2235, 2282, 2445, 2940, 2980, 3129, 3260, 3423, 4172, 4470, 4564, 4890, 5215, 5705, 6258, 6846, 7301, 7987, 8940, 9780, 10430, 11410, 12516, 13692, 14602, 15645, 15974, 17115, 20860, 21903, 22820, 23961, 24287, 29204, 31290, 31948, 34230, 36505, 39935, 43806, 47922, 48574, 62580, 68460, 72861, 73010, 79870, 87612, 95844, 97148, 109515, 119805, 121435, 145722, 146020, 159740, 170009, 219030, 239610, 242870, 291444, 340018, 364305, 438060, 479220, 485740, 510027, 680036, 728610, 850045, 1020054, 1190063, 1457220, 1700090, 2040108, 2380126, 2550135, 3400180, 3570189, 4760252, 5100270, 5950315, 7140378, 10200540, 11900630, 14280756, 17850945, 23801260, 35701890, 71403780]

約数ペア:

[(1, 71403780), (2, 35701890), (3, 23801260), (4, 17850945), (5, 14280756), (6, 11900630), (7, 10200540), (10, 7140378), (12, 5950315), (14, 5100270), (15, 4760252), (20, 3570189), (21, 3400180), (28, 2550135), (30, 2380126), (35, 2040108), (42, 1700090), (49, 1457220), (60, 1190063), (70, 1020054), (84, 850045), (98, 728610), (105, 680036), (140, 510027), (147, 485740), (149, 479220), (163, 438060), (196, 364305), (210, 340018), (245, 291444), (294, 242870), (298, 239610), (326, 219030), (420, 170009), (447, 159740), (489, 146020), (490, 145722), (588, 121435), (596, 119805), (652, 109515), (735, 97148), (745, 95844), (815, 87612), (894, 79870), (978, 73010), (980, 72861), (1043, 68460), (1141, 62580), (1470, 48574), (1490, 47922), (1630, 43806), (1788, 39935), (1956, 36505), (2086, 34230), (2235, 31948), (2282, 31290), (2445, 29204), (2940, 24287), (2980, 23961), (3129, 22820), (3260, 21903), (3423, 20860), (4172, 17115), (4470, 15974), (4564, 15645), (4890, 14602), (5215, 13692), (5705, 12516), (6258, 11410), (6846, 10430), (7301, 9780), (7987, 8940)]