21173850

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{223}}^1$

素因数の和:452

約数の個数: 72

約数和(自身を含む): 57412992

約数和(自身を除く): 36239142

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 211, 223, 225, 422, 446, 450, 633, 669, 1055, 1115, 1266, 1338, 1899, 2007, 2110, 2230, 3165, 3345, 3798, 4014, 5275, 5575, 6330, 6690, 9495, 10035, 10550, 11150, 15825, 16725, 18990, 20070, 31650, 33450, 47053, 47475, 50175, 94106, 94950, 100350, 141159, 235265, 282318, 423477, 470530, 705795, 846954, 1176325, 1411590, 2117385, 2352650, 3528975, 4234770, 7057950, 10586925, 21173850]

約数ペア:

[(1, 21173850), (2, 10586925), (3, 7057950), (5, 4234770), (6, 3528975), (9, 2352650), (10, 2117385), (15, 1411590), (18, 1176325), (25, 846954), (30, 705795), (45, 470530), (50, 423477), (75, 282318), (90, 235265), (150, 141159), (211, 100350), (223, 94950), (225, 94106), (422, 50175), (446, 47475), (450, 47053), (633, 33450), (669, 31650), (1055, 20070), (1115, 18990), (1266, 16725), (1338, 15825), (1899, 11150), (2007, 10550), (2110, 10035), (2230, 9495), (3165, 6690), (3345, 6330), (3798, 5575), (4014, 5275)]