405678420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{811}}^1$

素因数の和:1230

約数の個数: 144

約数和(自身を含む): 1411632768

約数和(自身を除く): 1005954348

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 397, 420, 630, 794, 811, 1191, 1260, 1588, 1622, 1985, 2382, 2433, 2779, 3244, 3573, 3970, 4055, 4764, 4866, 5558, 5677, 5955, 7146, 7299, 7940, 8110, 8337, 9732, 11116, 11354, 11910, 12165, 13895, 14292, 14598, 16220, 16674, 17031, 17865, 22708, 23820, 24330, 25011, 27790, 28385, 29196, 33348, 34062, 35730, 36495, 41685, 48660, 50022, 51093, 55580, 56770, 68124, 71460, 72990, 83370, 85155, 100044, 102186, 113540, 125055, 145980, 166740, 170310, 204372, 250110, 255465, 321967, 340620, 500220, 510930, 643934, 965901, 1021860, 1287868, 1609835, 1931802, 2253769, 2897703, 3219670, 3863604, 4507538, 4829505, 5795406, 6439340, 6761307, 9015076, 9659010, 11268845, 11590812, 13522614, 14488515, 19318020, 20283921, 22537690, 27045228, 28977030, 33806535, 40567842, 45075380, 57954060, 67613070, 81135684, 101419605, 135226140, 202839210, 405678420]

約数ペア:

[(1, 405678420), (2, 202839210), (3, 135226140), (4, 101419605), (5, 81135684), (6, 67613070), (7, 57954060), (9, 45075380), (10, 40567842), (12, 33806535), (14, 28977030), (15, 27045228), (18, 22537690), (20, 20283921), (21, 19318020), (28, 14488515), (30, 13522614), (35, 11590812), (36, 11268845), (42, 9659010), (45, 9015076), (60, 6761307), (63, 6439340), (70, 5795406), (84, 4829505), (90, 4507538), (105, 3863604), (126, 3219670), (140, 2897703), (180, 2253769), (210, 1931802), (252, 1609835), (315, 1287868), (397, 1021860), (420, 965901), (630, 643934), (794, 510930), (811, 500220), (1191, 340620), (1260, 321967), (1588, 255465), (1622, 250110), (1985, 204372), (2382, 170310), (2433, 166740), (2779, 145980), (3244, 125055), (3573, 113540), (3970, 102186), (4055, 100044), (4764, 85155), (4866, 83370), (5558, 72990), (5677, 71460), (5955, 68124), (7146, 56770), (7299, 55580), (7940, 51093), (8110, 50022), (8337, 48660), (9732, 41685), (11116, 36495), (11354, 35730), (11910, 34062), (12165, 33348), (13895, 29196), (14292, 28385), (14598, 27790), (16220, 25011), (16674, 24330), (17031, 23820), (17865, 22708)]