20319000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{521}}^1$

素因数の和:558

約数の個数: 128

約数和(自身を含む): 68402880

約数和(自身を除く): 48083880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 120, 125, 130, 150, 156, 195, 200, 250, 260, 300, 312, 325, 375, 390, 500, 520, 521, 600, 650, 750, 780, 975, 1000, 1042, 1300, 1500, 1560, 1563, 1625, 1950, 2084, 2600, 2605, 3000, 3126, 3250, 3900, 4168, 4875, 5210, 6252, 6500, 6773, 7800, 7815, 9750, 10420, 12504, 13000, 13025, 13546, 15630, 19500, 20319, 20840, 26050, 27092, 31260, 33865, 39000, 39075, 40638, 52100, 54184, 62520, 65125, 67730, 78150, 81276, 101595, 104200, 130250, 135460, 156300, 162552, 169325, 195375, 203190, 260500, 270920, 312600, 338650, 390750, 406380, 507975, 521000, 677300, 781500, 812760, 846625, 1015950, 1354600, 1563000, 1693250, 2031900, 2539875, 3386500, 4063800, 5079750, 6773000, 10159500, 20319000]

約数ペア:

[(1, 20319000), (2, 10159500), (3, 6773000), (4, 5079750), (5, 4063800), (6, 3386500), (8, 2539875), (10, 2031900), (12, 1693250), (13, 1563000), (15, 1354600), (20, 1015950), (24, 846625), (25, 812760), (26, 781500), (30, 677300), (39, 521000), (40, 507975), (50, 406380), (52, 390750), (60, 338650), (65, 312600), (75, 270920), (78, 260500), (100, 203190), (104, 195375), (120, 169325), (125, 162552), (130, 156300), (150, 135460), (156, 130250), (195, 104200), (200, 101595), (250, 81276), (260, 78150), (300, 67730), (312, 65125), (325, 62520), (375, 54184), (390, 52100), (500, 40638), (520, 39075), (521, 39000), (600, 33865), (650, 31260), (750, 27092), (780, 26050), (975, 20840), (1000, 20319), (1042, 19500), (1300, 15630), (1500, 13546), (1560, 13025), (1563, 13000), (1625, 12504), (1950, 10420), (2084, 9750), (2600, 7815), (2605, 7800), (3000, 6773), (3126, 6500), (3250, 6252), (3900, 5210), (4168, 4875)]