20807800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 53434080

約数和(自身を除く): 32626280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 53, 65, 100, 104, 106, 130, 151, 200, 212, 260, 265, 302, 325, 424, 520, 530, 604, 650, 689, 755, 1060, 1208, 1300, 1325, 1378, 1510, 1963, 2120, 2600, 2650, 2756, 3020, 3445, 3775, 3926, 5300, 5512, 6040, 6890, 7550, 7852, 8003, 9815, 10600, 13780, 15100, 15704, 16006, 17225, 19630, 27560, 30200, 32012, 34450, 39260, 40015, 49075, 64024, 68900, 78520, 80030, 98150, 104039, 137800, 160060, 196300, 200075, 208078, 320120, 392600, 400150, 416156, 520195, 800300, 832312, 1040390, 1600600, 2080780, 2600975, 4161560, 5201950, 10403900, 20807800]

約数ペア:

[(1, 20807800), (2, 10403900), (4, 5201950), (5, 4161560), (8, 2600975), (10, 2080780), (13, 1600600), (20, 1040390), (25, 832312), (26, 800300), (40, 520195), (50, 416156), (52, 400150), (53, 392600), (65, 320120), (100, 208078), (104, 200075), (106, 196300), (130, 160060), (151, 137800), (200, 104039), (212, 98150), (260, 80030), (265, 78520), (302, 68900), (325, 64024), (424, 49075), (520, 40015), (530, 39260), (604, 34450), (650, 32012), (689, 30200), (755, 27560), (1060, 19630), (1208, 17225), (1300, 16006), (1325, 15704), (1378, 15100), (1510, 13780), (1963, 10600), (2120, 9815), (2600, 8003), (2650, 7852), (2756, 7550), (3020, 6890), (3445, 6040), (3775, 5512), (3926, 5300)]