21636225

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{569}}^1$

素因数の和:611

約数の個数: 54

約数和(自身を含む): 42036930

約数和(自身を除く): 20400705

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 169, 195, 225, 325, 507, 569, 585, 845, 975, 1521, 1707, 2535, 2845, 2925, 4225, 5121, 7397, 7605, 8535, 12675, 14225, 22191, 25605, 36985, 38025, 42675, 66573, 96161, 110955, 128025, 184925, 288483, 332865, 480805, 554775, 865449, 1442415, 1664325, 2404025, 4327245, 7212075, 21636225]

約数ペア:

[(1, 21636225), (3, 7212075), (5, 4327245), (9, 2404025), (13, 1664325), (15, 1442415), (25, 865449), (39, 554775), (45, 480805), (65, 332865), (75, 288483), (117, 184925), (169, 128025), (195, 110955), (225, 96161), (325, 66573), (507, 42675), (569, 38025), (585, 36985), (845, 25605), (975, 22191), (1521, 14225), (1707, 12675), (2535, 8535), (2845, 7605), (2925, 7397), (4225, 5121)]