20871036225

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{80173}}^1$

素因数の和:80291

約数の個数: 72

約数和(自身を含む): 40710753720

約数和(自身を除く): 19839717495

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 89, 117, 195, 225, 267, 325, 445, 585, 801, 975, 1157, 1335, 2225, 2925, 3471, 4005, 5785, 6675, 10413, 17355, 20025, 28925, 52065, 80173, 86775, 240519, 260325, 400865, 721557, 1042249, 1202595, 2004325, 3126747, 3607785, 5211245, 6012975, 7135397, 9380241, 15633735, 18038925, 21406191, 26056225, 35676985, 46901205, 64218573, 78168675, 92760161, 107030955, 178384925, 234506025, 278280483, 321092865, 463800805, 535154775, 834841449, 1391402415, 1605464325, 2319004025, 4174207245, 6957012075, 20871036225]

約数ペア:

[(1, 20871036225), (3, 6957012075), (5, 4174207245), (9, 2319004025), (13, 1605464325), (15, 1391402415), (25, 834841449), (39, 535154775), (45, 463800805), (65, 321092865), (75, 278280483), (89, 234506025), (117, 178384925), (195, 107030955), (225, 92760161), (267, 78168675), (325, 64218573), (445, 46901205), (585, 35676985), (801, 26056225), (975, 21406191), (1157, 18038925), (1335, 15633735), (2225, 9380241), (2925, 7135397), (3471, 6012975), (4005, 5211245), (5785, 3607785), (6675, 3126747), (10413, 2004325), (17355, 1202595), (20025, 1042249), (28925, 721557), (52065, 400865), (80173, 260325), (86775, 240519)]