19838925

素因数分解:

$3^4\times 5^2\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:220

約数の個数: 60

約数和(自身を含む): 37494996

約数和(自身を除く): 17656071

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 97, 101, 135, 225, 291, 303, 405, 485, 505, 675, 873, 909, 1455, 1515, 2025, 2425, 2525, 2619, 2727, 4365, 4545, 7275, 7575, 7857, 8181, 9797, 13095, 13635, 21825, 22725, 29391, 39285, 40905, 48985, 65475, 68175, 88173, 146955, 196425, 204525, 244925, 264519, 440865, 734775, 793557, 1322595, 2204325, 3967785, 6612975, 19838925]

約数ペア:

[(1, 19838925), (3, 6612975), (5, 3967785), (9, 2204325), (15, 1322595), (25, 793557), (27, 734775), (45, 440865), (75, 264519), (81, 244925), (97, 204525), (101, 196425), (135, 146955), (225, 88173), (291, 68175), (303, 65475), (405, 48985), (485, 40905), (505, 39285), (675, 29391), (873, 22725), (909, 21825), (1455, 13635), (1515, 13095), (2025, 9797), (2425, 8181), (2525, 7857), (2619, 7575), (2727, 7275), (4365, 4545)]