19899675

素因数分解:

$3^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:370

約数の個数: 60

約数和(自身を含む): 38170176

約数和(自身を除く): 18270501

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 81, 93, 135, 155, 225, 279, 317, 405, 465, 675, 775, 837, 951, 1395, 1585, 2025, 2325, 2511, 2853, 4185, 4755, 6975, 7925, 8559, 9827, 12555, 14265, 20925, 23775, 25677, 29481, 42795, 49135, 62775, 71325, 88443, 128385, 147405, 213975, 245675, 265329, 442215, 641925, 737025, 795987, 1326645, 2211075, 3979935, 6633225, 19899675]

約数ペア:

[(1, 19899675), (3, 6633225), (5, 3979935), (9, 2211075), (15, 1326645), (25, 795987), (27, 737025), (31, 641925), (45, 442215), (75, 265329), (81, 245675), (93, 213975), (135, 147405), (155, 128385), (225, 88443), (279, 71325), (317, 62775), (405, 49135), (465, 42795), (675, 29481), (775, 25677), (837, 23775), (951, 20925), (1395, 14265), (1585, 12555), (2025, 9827), (2325, 8559), (2511, 7925), (2853, 6975), (4185, 4755)]