21681400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:329

約数の個数: 96

約数和(自身を含む): 56246400

約数和(自身を除く): 34565000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 31, 40, 50, 52, 62, 65, 100, 104, 124, 130, 155, 200, 248, 260, 269, 310, 325, 403, 520, 538, 620, 650, 775, 806, 1076, 1240, 1300, 1345, 1550, 1612, 2015, 2152, 2600, 2690, 3100, 3224, 3497, 4030, 5380, 6200, 6725, 6994, 8060, 8339, 10075, 10760, 13450, 13988, 16120, 16678, 17485, 20150, 26900, 27976, 33356, 34970, 40300, 41695, 53800, 66712, 69940, 80600, 83390, 87425, 108407, 139880, 166780, 174850, 208475, 216814, 333560, 349700, 416950, 433628, 542035, 699400, 833900, 867256, 1084070, 1667800, 2168140, 2710175, 4336280, 5420350, 10840700, 21681400]

約数ペア:

[(1, 21681400), (2, 10840700), (4, 5420350), (5, 4336280), (8, 2710175), (10, 2168140), (13, 1667800), (20, 1084070), (25, 867256), (26, 833900), (31, 699400), (40, 542035), (50, 433628), (52, 416950), (62, 349700), (65, 333560), (100, 216814), (104, 208475), (124, 174850), (130, 166780), (155, 139880), (200, 108407), (248, 87425), (260, 83390), (269, 80600), (310, 69940), (325, 66712), (403, 53800), (520, 41695), (538, 40300), (620, 34970), (650, 33356), (775, 27976), (806, 26900), (1076, 20150), (1240, 17485), (1300, 16678), (1345, 16120), (1550, 13988), (1612, 13450), (2015, 10760), (2152, 10075), (2600, 8339), (2690, 8060), (3100, 6994), (3224, 6725), (3497, 6200), (4030, 5380)]