21676620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 72279648

約数和(自身を除く): 50603028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 73, 84, 98, 101, 105, 140, 146, 147, 196, 202, 210, 219, 245, 292, 294, 303, 365, 404, 420, 438, 490, 505, 511, 588, 606, 707, 730, 735, 876, 980, 1010, 1022, 1095, 1212, 1414, 1460, 1470, 1515, 1533, 2020, 2044, 2121, 2190, 2555, 2828, 2940, 3030, 3066, 3535, 3577, 4242, 4380, 4949, 5110, 6060, 6132, 7070, 7154, 7373, 7665, 8484, 9898, 10220, 10605, 10731, 14140, 14308, 14746, 14847, 15330, 17885, 19796, 21210, 21462, 22119, 24745, 29492, 29694, 30660, 35770, 36865, 42420, 42924, 44238, 49490, 51611, 53655, 59388, 71540, 73730, 74235, 88476, 98980, 103222, 107310, 110595, 147460, 148470, 154833, 206444, 214620, 221190, 258055, 296940, 309666, 361277, 442380, 516110, 619332, 722554, 774165, 1032220, 1083831, 1445108, 1548330, 1806385, 2167662, 3096660, 3612770, 4335324, 5419155, 7225540, 10838310, 21676620]

約数ペア:

[(1, 21676620), (2, 10838310), (3, 7225540), (4, 5419155), (5, 4335324), (6, 3612770), (7, 3096660), (10, 2167662), (12, 1806385), (14, 1548330), (15, 1445108), (20, 1083831), (21, 1032220), (28, 774165), (30, 722554), (35, 619332), (42, 516110), (49, 442380), (60, 361277), (70, 309666), (73, 296940), (84, 258055), (98, 221190), (101, 214620), (105, 206444), (140, 154833), (146, 148470), (147, 147460), (196, 110595), (202, 107310), (210, 103222), (219, 98980), (245, 88476), (292, 74235), (294, 73730), (303, 71540), (365, 59388), (404, 53655), (420, 51611), (438, 49490), (490, 44238), (505, 42924), (511, 42420), (588, 36865), (606, 35770), (707, 30660), (730, 29694), (735, 29492), (876, 24745), (980, 22119), (1010, 21462), (1022, 21210), (1095, 19796), (1212, 17885), (1414, 15330), (1460, 14847), (1470, 14746), (1515, 14308), (1533, 14140), (2020, 10731), (2044, 10605), (2121, 10220), (2190, 9898), (2555, 8484), (2828, 7665), (2940, 7373), (3030, 7154), (3066, 7070), (3535, 6132), (3577, 6060), (4242, 5110), (4380, 4949)]