21807942

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 28511418

約数列:

[1, 2, 3, 6, 13, 26, 29, 31, 39, 58, 62, 78, 87, 93, 174, 186, 311, 377, 403, 622, 754, 806, 899, 933, 1131, 1209, 1798, 1866, 2262, 2418, 2697, 4043, 5394, 8086, 9019, 9641, 11687, 12129, 18038, 19282, 23374, 24258, 27057, 28923, 35061, 54114, 57846, 70122, 117247, 125333, 234494, 250666, 279589, 351741, 375999, 559178, 703482, 751998, 838767, 1677534, 3634657, 7269314, 10903971, 21807942]

約数ペア:

[(1, 21807942), (2, 10903971), (3, 7269314), (6, 3634657), (13, 1677534), (26, 838767), (29, 751998), (31, 703482), (39, 559178), (58, 375999), (62, 351741), (78, 279589), (87, 250666), (93, 234494), (174, 125333), (186, 117247), (311, 70122), (377, 57846), (403, 54114), (622, 35061), (754, 28923), (806, 27057), (899, 24258), (933, 23374), (1131, 19282), (1209, 18038), (1798, 12129), (1866, 11687), (2262, 9641), (2418, 9019), (2697, 8086), (4043, 5394)]