19011915

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 38541888

約数和(自身を除く): 19529973

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 81, 115, 117, 135, 157, 195, 207, 299, 345, 351, 405, 471, 585, 621, 785, 897, 1035, 1053, 1413, 1495, 1755, 1863, 2041, 2355, 2691, 3105, 3611, 4239, 4485, 5265, 6123, 7065, 8073, 9315, 10205, 10833, 12717, 13455, 18055, 18369, 21195, 24219, 30615, 32499, 40365, 46943, 54165, 55107, 63585, 91845, 97497, 121095, 140829, 162495, 165321, 234715, 275535, 292491, 422487, 487485, 704145, 826605, 1267461, 1462455, 2112435, 3802383, 6337305, 19011915]

約数ペア:

[(1, 19011915), (3, 6337305), (5, 3802383), (9, 2112435), (13, 1462455), (15, 1267461), (23, 826605), (27, 704145), (39, 487485), (45, 422487), (65, 292491), (69, 275535), (81, 234715), (115, 165321), (117, 162495), (135, 140829), (157, 121095), (195, 97497), (207, 91845), (299, 63585), (345, 55107), (351, 54165), (405, 46943), (471, 40365), (585, 32499), (621, 30615), (785, 24219), (897, 21195), (1035, 18369), (1053, 18055), (1413, 13455), (1495, 12717), (1755, 10833), (1863, 10205), (2041, 9315), (2355, 8073), (2691, 7065), (3105, 6123), (3611, 5265), (4239, 4485)]