128421020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1791

約数の個数: 96

約数和(自身を含む): 340212096

約数和(自身を除く): 211791076

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 41, 52, 65, 70, 82, 91, 130, 140, 164, 182, 205, 260, 287, 364, 410, 455, 533, 574, 820, 910, 1066, 1148, 1435, 1721, 1820, 2132, 2665, 2870, 3442, 3731, 5330, 5740, 6884, 7462, 8605, 10660, 12047, 14924, 17210, 18655, 22373, 24094, 34420, 37310, 44746, 48188, 60235, 70561, 74620, 89492, 111865, 120470, 141122, 156611, 223730, 240940, 282244, 313222, 352805, 447460, 493927, 626444, 705610, 783055, 917293, 987854, 1411220, 1566110, 1834586, 1975708, 2469635, 3132220, 3669172, 4586465, 4939270, 6421051, 9172930, 9878540, 12842102, 18345860, 25684204, 32105255, 64210510, 128421020]

約数ペア:

[(1, 128421020), (2, 64210510), (4, 32105255), (5, 25684204), (7, 18345860), (10, 12842102), (13, 9878540), (14, 9172930), (20, 6421051), (26, 4939270), (28, 4586465), (35, 3669172), (41, 3132220), (52, 2469635), (65, 1975708), (70, 1834586), (82, 1566110), (91, 1411220), (130, 987854), (140, 917293), (164, 783055), (182, 705610), (205, 626444), (260, 493927), (287, 447460), (364, 352805), (410, 313222), (455, 282244), (533, 240940), (574, 223730), (820, 156611), (910, 141122), (1066, 120470), (1148, 111865), (1435, 89492), (1721, 74620), (1820, 70561), (2132, 60235), (2665, 48188), (2870, 44746), (3442, 37310), (3731, 34420), (5330, 24094), (5740, 22373), (6884, 18655), (7462, 17210), (8605, 14924), (10660, 12047)]