21454212

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 55339200

約数和(自身を除く): 33884988

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 71, 78, 142, 149, 156, 169, 213, 284, 298, 338, 426, 447, 507, 596, 676, 852, 894, 923, 1014, 1788, 1846, 1937, 2028, 2769, 3692, 3874, 5538, 5811, 7748, 10579, 11076, 11622, 11999, 21158, 23244, 23998, 25181, 31737, 35997, 42316, 47996, 50362, 63474, 71994, 75543, 100724, 126948, 137527, 143988, 151086, 275054, 302172, 412581, 550108, 825162, 1650324, 1787851, 3575702, 5363553, 7151404, 10727106, 21454212]

約数ペア:

[(1, 21454212), (2, 10727106), (3, 7151404), (4, 5363553), (6, 3575702), (12, 1787851), (13, 1650324), (26, 825162), (39, 550108), (52, 412581), (71, 302172), (78, 275054), (142, 151086), (149, 143988), (156, 137527), (169, 126948), (213, 100724), (284, 75543), (298, 71994), (338, 63474), (426, 50362), (447, 47996), (507, 42316), (596, 35997), (676, 31737), (852, 25181), (894, 23998), (923, 23244), (1014, 21158), (1788, 11999), (1846, 11622), (1937, 11076), (2028, 10579), (2769, 7748), (3692, 5811), (3874, 5538)]