18521750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 38525760

約数和(自身を除く): 20004010

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 125, 130, 139, 205, 250, 278, 325, 410, 533, 650, 695, 1025, 1066, 1390, 1625, 1807, 2050, 2665, 3250, 3475, 3614, 5125, 5330, 5699, 6950, 9035, 10250, 11398, 13325, 17375, 18070, 26650, 28495, 34750, 45175, 56990, 66625, 74087, 90350, 133250, 142475, 148174, 225875, 284950, 370435, 451750, 712375, 740870, 1424750, 1852175, 3704350, 9260875, 18521750]

約数ペア:

[(1, 18521750), (2, 9260875), (5, 3704350), (10, 1852175), (13, 1424750), (25, 740870), (26, 712375), (41, 451750), (50, 370435), (65, 284950), (82, 225875), (125, 148174), (130, 142475), (139, 133250), (205, 90350), (250, 74087), (278, 66625), (325, 56990), (410, 45175), (533, 34750), (650, 28495), (695, 26650), (1025, 18070), (1066, 17375), (1390, 13325), (1625, 11398), (1807, 10250), (2050, 9035), (2665, 6950), (3250, 5699), (3475, 5330), (3614, 5125)]