21293636

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 47793816

約数和(自身を除く): 26500180

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 61, 91, 98, 122, 137, 182, 196, 244, 274, 364, 427, 548, 637, 793, 854, 959, 1274, 1586, 1708, 1781, 1918, 2548, 2989, 3172, 3562, 3836, 5551, 5978, 6713, 7124, 8357, 11102, 11956, 12467, 13426, 16714, 22204, 24934, 26852, 33428, 38857, 49868, 58499, 77714, 87269, 108641, 116998, 155428, 174538, 217282, 233996, 349076, 409493, 434564, 760487, 818986, 1520974, 1637972, 3041948, 5323409, 10646818, 21293636]

約数ペア:

[(1, 21293636), (2, 10646818), (4, 5323409), (7, 3041948), (13, 1637972), (14, 1520974), (26, 818986), (28, 760487), (49, 434564), (52, 409493), (61, 349076), (91, 233996), (98, 217282), (122, 174538), (137, 155428), (182, 116998), (196, 108641), (244, 87269), (274, 77714), (364, 58499), (427, 49868), (548, 38857), (637, 33428), (793, 26852), (854, 24934), (959, 22204), (1274, 16714), (1586, 13426), (1708, 12467), (1781, 11956), (1918, 11102), (2548, 8357), (2989, 7124), (3172, 6713), (3562, 5978), (3836, 5551)]