21021410

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21556510

約数列:

[1, 2, 5, 10, 19, 31, 38, 43, 62, 83, 86, 95, 155, 166, 190, 215, 310, 415, 430, 589, 817, 830, 1178, 1333, 1577, 1634, 2573, 2666, 2945, 3154, 3569, 4085, 5146, 5890, 6665, 7138, 7885, 8170, 12865, 13330, 15770, 17845, 25327, 25730, 35690, 48887, 50654, 67811, 97774, 110639, 126635, 135622, 221278, 244435, 253270, 339055, 488870, 553195, 678110, 1106390, 2102141, 4204282, 10510705, 21021410]

約数ペア:

[(1, 21021410), (2, 10510705), (5, 4204282), (10, 2102141), (19, 1106390), (31, 678110), (38, 553195), (43, 488870), (62, 339055), (83, 253270), (86, 244435), (95, 221278), (155, 135622), (166, 126635), (190, 110639), (215, 97774), (310, 67811), (415, 50654), (430, 48887), (589, 35690), (817, 25730), (830, 25327), (1178, 17845), (1333, 15770), (1577, 13330), (1634, 12865), (2573, 8170), (2666, 7885), (2945, 7138), (3154, 6665), (3569, 5890), (4085, 5146)]