19996470

素因数分解:

$2^1\times 3^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:249

約数の個数: 112

約数和(自身を含む): 58392432

約数和(自身を除く): 38395962

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 195, 211, 234, 243, 270, 351, 390, 405, 422, 486, 585, 633, 702, 729, 810, 1053, 1055, 1170, 1215, 1266, 1458, 1755, 1899, 2106, 2110, 2430, 2743, 3159, 3165, 3510, 3645, 3798, 5265, 5486, 5697, 6318, 6330, 7290, 8229, 9477, 9495, 10530, 11394, 13715, 15795, 16458, 17091, 18954, 18990, 24687, 27430, 28485, 31590, 34182, 41145, 47385, 49374, 51273, 56970, 74061, 82290, 85455, 94770, 102546, 123435, 148122, 153819, 170910, 222183, 246870, 256365, 307638, 370305, 444366, 512730, 666549, 740610, 769095, 1110915, 1333098, 1538190, 1999647, 2221830, 3332745, 3999294, 6665490, 9998235, 19996470]

約数ペア:

[(1, 19996470), (2, 9998235), (3, 6665490), (5, 3999294), (6, 3332745), (9, 2221830), (10, 1999647), (13, 1538190), (15, 1333098), (18, 1110915), (26, 769095), (27, 740610), (30, 666549), (39, 512730), (45, 444366), (54, 370305), (65, 307638), (78, 256365), (81, 246870), (90, 222183), (117, 170910), (130, 153819), (135, 148122), (162, 123435), (195, 102546), (211, 94770), (234, 85455), (243, 82290), (270, 74061), (351, 56970), (390, 51273), (405, 49374), (422, 47385), (486, 41145), (585, 34182), (633, 31590), (702, 28485), (729, 27430), (810, 24687), (1053, 18990), (1055, 18954), (1170, 17091), (1215, 16458), (1266, 15795), (1458, 13715), (1755, 11394), (1899, 10530), (2106, 9495), (2110, 9477), (2430, 8229), (2743, 7290), (3159, 6330), (3165, 6318), (3510, 5697), (3645, 5486), (3798, 5265)]