19939140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8521}}^1$

素因数の和:8549

約数の個数: 72

約数和(自身を含む): 65142168

約数和(自身を除く): 45203028

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8521, 17042, 25563, 34084, 42605, 51126, 76689, 85210, 102252, 110773, 127815, 153378, 170420, 221546, 255630, 306756, 332319, 383445, 443092, 511260, 553865, 664638, 766890, 996957, 1107730, 1329276, 1533780, 1661595, 1993914, 2215460, 3323190, 3987828, 4984785, 6646380, 9969570, 19939140]

約数ペア:

[(1, 19939140), (2, 9969570), (3, 6646380), (4, 4984785), (5, 3987828), (6, 3323190), (9, 2215460), (10, 1993914), (12, 1661595), (13, 1533780), (15, 1329276), (18, 1107730), (20, 996957), (26, 766890), (30, 664638), (36, 553865), (39, 511260), (45, 443092), (52, 383445), (60, 332319), (65, 306756), (78, 255630), (90, 221546), (117, 170420), (130, 153378), (156, 127815), (180, 110773), (195, 102252), (234, 85210), (260, 76689), (390, 51126), (468, 42605), (585, 34084), (780, 25563), (1170, 17042), (2340, 8521)]