18871875

素因数分解:

$3^2\times 5^5\times {\mathrm{11}}^1\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 72

約数和(自身を含む): 37778832

約数和(自身を除く): 18906957

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 61, 75, 99, 125, 165, 183, 225, 275, 305, 375, 495, 549, 625, 671, 825, 915, 1125, 1375, 1525, 1875, 2013, 2475, 2745, 3125, 3355, 4125, 4575, 5625, 6039, 6875, 7625, 9375, 10065, 12375, 13725, 16775, 20625, 22875, 28125, 30195, 34375, 38125, 50325, 61875, 68625, 83875, 103125, 114375, 150975, 190625, 251625, 309375, 343125, 419375, 571875, 754875, 1258125, 1715625, 2096875, 3774375, 6290625, 18871875]

約数ペア:

[(1, 18871875), (3, 6290625), (5, 3774375), (9, 2096875), (11, 1715625), (15, 1258125), (25, 754875), (33, 571875), (45, 419375), (55, 343125), (61, 309375), (75, 251625), (99, 190625), (125, 150975), (165, 114375), (183, 103125), (225, 83875), (275, 68625), (305, 61875), (375, 50325), (495, 38125), (549, 34375), (625, 30195), (671, 28125), (825, 22875), (915, 20625), (1125, 16775), (1375, 13725), (1525, 12375), (1875, 10065), (2013, 9375), (2475, 7625), (2745, 6875), (3125, 6039), (3355, 5625), (4125, 4575)]