905843380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{283}}^1\times {\mathrm{947}}^1$

素因数の和:1265

約数の個数: 72

約数和(自身を含む): 2069317152

約数和(自身を除く): 1163473772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 283, 338, 566, 676, 845, 947, 1132, 1415, 1690, 1894, 2830, 3380, 3679, 3788, 4735, 5660, 7358, 9470, 12311, 14716, 18395, 18940, 24622, 36790, 47827, 49244, 61555, 73580, 95654, 123110, 160043, 191308, 239135, 246220, 268001, 320086, 478270, 536002, 640172, 800215, 956540, 1072004, 1340005, 1600430, 2680010, 3200860, 3484013, 5360020, 6968026, 13936052, 17420065, 34840130, 45292169, 69680260, 90584338, 181168676, 226460845, 452921690, 905843380]

約数ペア:

[(1, 905843380), (2, 452921690), (4, 226460845), (5, 181168676), (10, 90584338), (13, 69680260), (20, 45292169), (26, 34840130), (52, 17420065), (65, 13936052), (130, 6968026), (169, 5360020), (260, 3484013), (283, 3200860), (338, 2680010), (566, 1600430), (676, 1340005), (845, 1072004), (947, 956540), (1132, 800215), (1415, 640172), (1690, 536002), (1894, 478270), (2830, 320086), (3380, 268001), (3679, 246220), (3788, 239135), (4735, 191308), (5660, 160043), (7358, 123110), (9470, 95654), (12311, 73580), (14716, 61555), (18395, 49244), (18940, 47827), (24622, 36790)]