19982520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1$

素因数の和:1245

約数の個数: 96

約数和(自身を含む): 66381120

約数和(自身を除く): 46398600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 47, 60, 72, 90, 94, 120, 141, 180, 188, 235, 282, 360, 376, 423, 470, 564, 705, 846, 940, 1128, 1181, 1410, 1692, 1880, 2115, 2362, 2820, 3384, 3543, 4230, 4724, 5640, 5905, 7086, 8460, 9448, 10629, 11810, 14172, 16920, 17715, 21258, 23620, 28344, 35430, 42516, 47240, 53145, 55507, 70860, 85032, 106290, 111014, 141720, 166521, 212580, 222028, 277535, 333042, 425160, 444056, 499563, 555070, 666084, 832605, 999126, 1110140, 1332168, 1665210, 1998252, 2220280, 2497815, 3330420, 3996504, 4995630, 6660840, 9991260, 19982520]

約数ペア:

[(1, 19982520), (2, 9991260), (3, 6660840), (4, 4995630), (5, 3996504), (6, 3330420), (8, 2497815), (9, 2220280), (10, 1998252), (12, 1665210), (15, 1332168), (18, 1110140), (20, 999126), (24, 832605), (30, 666084), (36, 555070), (40, 499563), (45, 444056), (47, 425160), (60, 333042), (72, 277535), (90, 222028), (94, 212580), (120, 166521), (141, 141720), (180, 111014), (188, 106290), (235, 85032), (282, 70860), (360, 55507), (376, 53145), (423, 47240), (470, 42516), (564, 35430), (705, 28344), (846, 23620), (940, 21258), (1128, 17715), (1181, 16920), (1410, 14172), (1692, 11810), (1880, 10629), (2115, 9448), (2362, 8460), (2820, 7086), (3384, 5905), (3543, 5640), (4230, 4724)]