20045025

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:136

約数の個数: 144

約数和(自身を含む): 48746880

約数和(自身を除く): 28701855

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 25, 33, 35, 39, 45, 55, 63, 65, 75, 77, 89, 91, 99, 105, 117, 143, 165, 175, 195, 225, 231, 267, 273, 275, 315, 325, 385, 429, 445, 455, 495, 525, 585, 623, 693, 715, 801, 819, 825, 975, 979, 1001, 1155, 1157, 1287, 1335, 1365, 1575, 1869, 1925, 2145, 2225, 2275, 2475, 2925, 2937, 3003, 3115, 3465, 3471, 3575, 4005, 4095, 4895, 5005, 5607, 5775, 5785, 6435, 6675, 6825, 6853, 8099, 8811, 9009, 9345, 10413, 10725, 12727, 14685, 15015, 15575, 17325, 17355, 20025, 20475, 20559, 24297, 24475, 25025, 28035, 28925, 32175, 34265, 38181, 40495, 44055, 45045, 46725, 52065, 61677, 63635, 72891, 73425, 75075, 86775, 89089, 102795, 114543, 121485, 140175, 171325, 190905, 202475, 220275, 225225, 260325, 267267, 308385, 318175, 364455, 445445, 513975, 572715, 607425, 801801, 954525, 1336335, 1541925, 1822275, 2227225, 2863575, 4009005, 6681675, 20045025]

約数ペア:

[(1, 20045025), (3, 6681675), (5, 4009005), (7, 2863575), (9, 2227225), (11, 1822275), (13, 1541925), (15, 1336335), (21, 954525), (25, 801801), (33, 607425), (35, 572715), (39, 513975), (45, 445445), (55, 364455), (63, 318175), (65, 308385), (75, 267267), (77, 260325), (89, 225225), (91, 220275), (99, 202475), (105, 190905), (117, 171325), (143, 140175), (165, 121485), (175, 114543), (195, 102795), (225, 89089), (231, 86775), (267, 75075), (273, 73425), (275, 72891), (315, 63635), (325, 61677), (385, 52065), (429, 46725), (445, 45045), (455, 44055), (495, 40495), (525, 38181), (585, 34265), (623, 32175), (693, 28925), (715, 28035), (801, 25025), (819, 24475), (825, 24297), (975, 20559), (979, 20475), (1001, 20025), (1155, 17355), (1157, 17325), (1287, 15575), (1335, 15015), (1365, 14685), (1575, 12727), (1869, 10725), (1925, 10413), (2145, 9345), (2225, 9009), (2275, 8811), (2475, 8099), (2925, 6853), (2937, 6825), (3003, 6675), (3115, 6435), (3465, 5785), (3471, 5775), (3575, 5607), (4005, 5005), (4095, 4895)]