20028720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4909}}^1$

素因数の和:4942

約数の個数: 80

約数和(自身を含む): 65754720

約数和(自身を除く): 45726000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 4909, 9818, 14727, 19636, 24545, 29454, 39272, 49090, 58908, 73635, 78544, 83453, 98180, 117816, 147270, 166906, 196360, 235632, 250359, 294540, 333812, 392720, 417265, 500718, 589080, 667624, 834530, 1001436, 1178160, 1251795, 1335248, 1669060, 2002872, 2503590, 3338120, 4005744, 5007180, 6676240, 10014360, 20028720]

約数ペア:

[(1, 20028720), (2, 10014360), (3, 6676240), (4, 5007180), (5, 4005744), (6, 3338120), (8, 2503590), (10, 2002872), (12, 1669060), (15, 1335248), (16, 1251795), (17, 1178160), (20, 1001436), (24, 834530), (30, 667624), (34, 589080), (40, 500718), (48, 417265), (51, 392720), (60, 333812), (68, 294540), (80, 250359), (85, 235632), (102, 196360), (120, 166906), (136, 147270), (170, 117816), (204, 98180), (240, 83453), (255, 78544), (272, 73635), (340, 58908), (408, 49090), (510, 39272), (680, 29454), (816, 24545), (1020, 19636), (1360, 14727), (2040, 9818), (4080, 4909)]