19910556

素因数分解:

$2^2\times 3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:376

約数の個数: 96

約数和(自身を含む): 56268800

約数和(自身を除く): 36358244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 27, 31, 36, 38, 54, 57, 62, 76, 93, 108, 114, 124, 171, 186, 228, 279, 313, 342, 372, 513, 558, 589, 626, 684, 837, 939, 1026, 1116, 1178, 1252, 1674, 1767, 1878, 2052, 2356, 2817, 3348, 3534, 3756, 5301, 5634, 5947, 7068, 8451, 9703, 10602, 11268, 11894, 15903, 16902, 17841, 19406, 21204, 23788, 29109, 31806, 33804, 35682, 38812, 53523, 58218, 63612, 71364, 87327, 107046, 116436, 160569, 174654, 184357, 214092, 261981, 321138, 349308, 368714, 523962, 553071, 642276, 737428, 1047924, 1106142, 1659213, 2212284, 3318426, 4977639, 6636852, 9955278, 19910556]

約数ペア:

[(1, 19910556), (2, 9955278), (3, 6636852), (4, 4977639), (6, 3318426), (9, 2212284), (12, 1659213), (18, 1106142), (19, 1047924), (27, 737428), (31, 642276), (36, 553071), (38, 523962), (54, 368714), (57, 349308), (62, 321138), (76, 261981), (93, 214092), (108, 184357), (114, 174654), (124, 160569), (171, 116436), (186, 107046), (228, 87327), (279, 71364), (313, 63612), (342, 58218), (372, 53523), (513, 38812), (558, 35682), (589, 33804), (626, 31806), (684, 29109), (837, 23788), (939, 21204), (1026, 19406), (1116, 17841), (1178, 16902), (1252, 15903), (1674, 11894), (1767, 11268), (1878, 10602), (2052, 9703), (2356, 8451), (2817, 7068), (3348, 5947), (3534, 5634), (3756, 5301)]