20098845

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:131

約数の個数: 96

約数和(自身を含む): 41513472

約数和(自身を除く): 21414627

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 43, 45, 47, 51, 65, 85, 117, 129, 141, 153, 195, 215, 221, 235, 255, 387, 423, 559, 585, 611, 645, 663, 705, 731, 765, 799, 1105, 1677, 1833, 1935, 1989, 2021, 2115, 2193, 2397, 2795, 3055, 3315, 3655, 3995, 5031, 5499, 6063, 6579, 7191, 8385, 9165, 9503, 9945, 10105, 10387, 10965, 11985, 18189, 25155, 26273, 27495, 28509, 30315, 31161, 32895, 34357, 35955, 47515, 51935, 78819, 85527, 90945, 93483, 103071, 131365, 142545, 155805, 171785, 236457, 309213, 394095, 427635, 446641, 467415, 515355, 1182285, 1339923, 1546065, 2233205, 4019769, 6699615, 20098845]

約数ペア:

[(1, 20098845), (3, 6699615), (5, 4019769), (9, 2233205), (13, 1546065), (15, 1339923), (17, 1182285), (39, 515355), (43, 467415), (45, 446641), (47, 427635), (51, 394095), (65, 309213), (85, 236457), (117, 171785), (129, 155805), (141, 142545), (153, 131365), (195, 103071), (215, 93483), (221, 90945), (235, 85527), (255, 78819), (387, 51935), (423, 47515), (559, 35955), (585, 34357), (611, 32895), (645, 31161), (663, 30315), (705, 28509), (731, 27495), (765, 26273), (799, 25155), (1105, 18189), (1677, 11985), (1833, 10965), (1935, 10387), (1989, 10105), (2021, 9945), (2115, 9503), (2193, 9165), (2397, 8385), (2795, 7191), (3055, 6579), (3315, 6063), (3655, 5499), (3995, 5031)]