20560905

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^3\times {\mathrm{31}}^1$

素因数の和:96

約数の個数: 64

約数和(自身を含む): 40089600

約数和(自身を除く): 19528695

約数列:

[1, 3, 5, 9, 15, 17, 27, 31, 45, 51, 85, 93, 135, 153, 155, 255, 279, 289, 459, 465, 527, 765, 837, 867, 1395, 1445, 1581, 2295, 2601, 2635, 4185, 4335, 4743, 4913, 7803, 7905, 8959, 13005, 14229, 14739, 23715, 24565, 26877, 39015, 44217, 44795, 71145, 73695, 80631, 132651, 134385, 152303, 221085, 241893, 403155, 456909, 663255, 761515, 1209465, 1370727, 2284545, 4112181, 6853635, 20560905]

約数ペア:

[(1, 20560905), (3, 6853635), (5, 4112181), (9, 2284545), (15, 1370727), (17, 1209465), (27, 761515), (31, 663255), (45, 456909), (51, 403155), (85, 241893), (93, 221085), (135, 152303), (153, 134385), (155, 132651), (255, 80631), (279, 73695), (289, 71145), (459, 44795), (465, 44217), (527, 39015), (765, 26877), (837, 24565), (867, 23715), (1395, 14739), (1445, 14229), (1581, 13005), (2295, 8959), (2601, 7905), (2635, 7803), (4185, 4913), (4335, 4743)]