204324380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1087

約数の個数: 72

約数和(自身を含む): 472719744

約数和(自身を除く): 268395364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 169, 244, 260, 305, 338, 610, 676, 793, 845, 991, 1220, 1586, 1690, 1982, 3172, 3380, 3964, 3965, 4955, 7930, 9910, 10309, 12883, 15860, 19820, 20618, 25766, 41236, 51532, 51545, 60451, 64415, 103090, 120902, 128830, 167479, 206180, 241804, 257660, 302255, 334958, 604510, 669916, 785863, 837395, 1209020, 1571726, 1674790, 3143452, 3349580, 3929315, 7858630, 10216219, 15717260, 20432438, 40864876, 51081095, 102162190, 204324380]

約数ペア:

[(1, 204324380), (2, 102162190), (4, 51081095), (5, 40864876), (10, 20432438), (13, 15717260), (20, 10216219), (26, 7858630), (52, 3929315), (61, 3349580), (65, 3143452), (122, 1674790), (130, 1571726), (169, 1209020), (244, 837395), (260, 785863), (305, 669916), (338, 604510), (610, 334958), (676, 302255), (793, 257660), (845, 241804), (991, 206180), (1220, 167479), (1586, 128830), (1690, 120902), (1982, 103090), (3172, 64415), (3380, 60451), (3964, 51545), (3965, 51532), (4955, 41236), (7930, 25766), (9910, 20618), (10309, 19820), (12883, 15860)]