21191976

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{7547}}^1$

素因数の和:7575

約数の個数: 64

約数和(自身を含む): 63403200

約数和(自身を除く): 42211224

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404, 2808, 7547, 15094, 22641, 30188, 45282, 60376, 67923, 90564, 98111, 135846, 181128, 196222, 203769, 271692, 294333, 392444, 407538, 543384, 588666, 784888, 815076, 882999, 1177332, 1630152, 1765998, 2354664, 2648997, 3531996, 5297994, 7063992, 10595988, 21191976]

約数ペア:

[(1, 21191976), (2, 10595988), (3, 7063992), (4, 5297994), (6, 3531996), (8, 2648997), (9, 2354664), (12, 1765998), (13, 1630152), (18, 1177332), (24, 882999), (26, 815076), (27, 784888), (36, 588666), (39, 543384), (52, 407538), (54, 392444), (72, 294333), (78, 271692), (104, 203769), (108, 196222), (117, 181128), (156, 135846), (216, 98111), (234, 90564), (312, 67923), (351, 60376), (468, 45282), (702, 30188), (936, 22641), (1404, 15094), (2808, 7547)]