405421720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{29723}}^1$

素因数の和:29776

約数の個数: 64

約数和(自身を含む): 1027261440

約数和(自身を除く): 621839720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2728, 3410, 6820, 13640, 29723, 59446, 118892, 148615, 237784, 297230, 326953, 594460, 653906, 921413, 1188920, 1307812, 1634765, 1842826, 2615624, 3269530, 3685652, 4607065, 6539060, 7371304, 9214130, 10135543, 13078120, 18428260, 20271086, 36856520, 40542172, 50677715, 81084344, 101355430, 202710860, 405421720]

約数ペア:

[(1, 405421720), (2, 202710860), (4, 101355430), (5, 81084344), (8, 50677715), (10, 40542172), (11, 36856520), (20, 20271086), (22, 18428260), (31, 13078120), (40, 10135543), (44, 9214130), (55, 7371304), (62, 6539060), (88, 4607065), (110, 3685652), (124, 3269530), (155, 2615624), (220, 1842826), (248, 1634765), (310, 1307812), (341, 1188920), (440, 921413), (620, 653906), (682, 594460), (1240, 326953), (1364, 297230), (1705, 237784), (2728, 148615), (3410, 118892), (6820, 59446), (13640, 29723)]