20011275

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 39203840

約数和(自身を除く): 19192565

約数列:

[1, 3, 5, 9, 15, 19, 25, 31, 45, 57, 75, 93, 95, 151, 155, 171, 225, 279, 285, 453, 465, 475, 589, 755, 775, 855, 1359, 1395, 1425, 1767, 2265, 2325, 2869, 2945, 3775, 4275, 4681, 5301, 6795, 6975, 8607, 8835, 11325, 14043, 14345, 14725, 23405, 25821, 26505, 33975, 42129, 43035, 44175, 70215, 71725, 88939, 117025, 129105, 132525, 210645, 215175, 266817, 351075, 444695, 645525, 800451, 1053225, 1334085, 2223475, 4002255, 6670425, 20011275]

約数ペア:

[(1, 20011275), (3, 6670425), (5, 4002255), (9, 2223475), (15, 1334085), (19, 1053225), (25, 800451), (31, 645525), (45, 444695), (57, 351075), (75, 266817), (93, 215175), (95, 210645), (151, 132525), (155, 129105), (171, 117025), (225, 88939), (279, 71725), (285, 70215), (453, 44175), (465, 43035), (475, 42129), (589, 33975), (755, 26505), (775, 25821), (855, 23405), (1359, 14725), (1395, 14345), (1425, 14043), (1767, 11325), (2265, 8835), (2325, 8607), (2869, 6975), (2945, 6795), (3775, 5301), (4275, 4681)]