251663880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161323}}^1$

素因数の和:161350

約数の個数: 64

約数和(自身を含む): 813072960

約数和(自身を除く): 561409080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 161323, 322646, 483969, 645292, 806615, 967938, 1290584, 1613230, 1935876, 2097199, 2419845, 3226460, 3871752, 4194398, 4839690, 6291597, 6452920, 8388796, 9679380, 10485995, 12583194, 16777592, 19358760, 20971990, 25166388, 31457985, 41943980, 50332776, 62915970, 83887960, 125831940, 251663880]

約数ペア:

[(1, 251663880), (2, 125831940), (3, 83887960), (4, 62915970), (5, 50332776), (6, 41943980), (8, 31457985), (10, 25166388), (12, 20971990), (13, 19358760), (15, 16777592), (20, 12583194), (24, 10485995), (26, 9679380), (30, 8388796), (39, 6452920), (40, 6291597), (52, 4839690), (60, 4194398), (65, 3871752), (78, 3226460), (104, 2419845), (120, 2097199), (130, 1935876), (156, 1613230), (195, 1290584), (260, 967938), (312, 806615), (390, 645292), (520, 483969), (780, 322646), (1560, 161323)]