28785855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 56770560

約数和(自身を除く): 27984705

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 47, 57, 95, 105, 133, 141, 235, 285, 307, 329, 399, 665, 705, 893, 921, 987, 1535, 1645, 1995, 2149, 2679, 4465, 4605, 4935, 5833, 6251, 6447, 10745, 13395, 14429, 17499, 18753, 29165, 31255, 32235, 40831, 43287, 72145, 87495, 93765, 101003, 122493, 204155, 216435, 274151, 303009, 505015, 612465, 822453, 1370755, 1515045, 1919057, 4112265, 5757171, 9595285, 28785855]

約数ペア:

[(1, 28785855), (3, 9595285), (5, 5757171), (7, 4112265), (15, 1919057), (19, 1515045), (21, 1370755), (35, 822453), (47, 612465), (57, 505015), (95, 303009), (105, 274151), (133, 216435), (141, 204155), (235, 122493), (285, 101003), (307, 93765), (329, 87495), (399, 72145), (665, 43287), (705, 40831), (893, 32235), (921, 31255), (987, 29165), (1535, 18753), (1645, 17499), (1995, 14429), (2149, 13395), (2679, 10745), (4465, 6447), (4605, 6251), (4935, 5833)]