20439840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{439}}^1$

素因数の和:554

約数の個数: 96

約数和(自身を含む): 65197440

約数和(自身を除く): 44757600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 97, 120, 160, 194, 240, 291, 388, 439, 480, 485, 582, 776, 878, 970, 1164, 1317, 1455, 1552, 1756, 1940, 2195, 2328, 2634, 2910, 3104, 3512, 3880, 4390, 4656, 5268, 5820, 6585, 7024, 7760, 8780, 9312, 10536, 11640, 13170, 14048, 15520, 17560, 21072, 23280, 26340, 35120, 42144, 42583, 46560, 52680, 70240, 85166, 105360, 127749, 170332, 210720, 212915, 255498, 340664, 425830, 510996, 638745, 681328, 851660, 1021992, 1277490, 1362656, 1703320, 2043984, 2554980, 3406640, 4087968, 5109960, 6813280, 10219920, 20439840]

約数ペア:

[(1, 20439840), (2, 10219920), (3, 6813280), (4, 5109960), (5, 4087968), (6, 3406640), (8, 2554980), (10, 2043984), (12, 1703320), (15, 1362656), (16, 1277490), (20, 1021992), (24, 851660), (30, 681328), (32, 638745), (40, 510996), (48, 425830), (60, 340664), (80, 255498), (96, 212915), (97, 210720), (120, 170332), (160, 127749), (194, 105360), (240, 85166), (291, 70240), (388, 52680), (439, 46560), (480, 42583), (485, 42144), (582, 35120), (776, 26340), (878, 23280), (970, 21072), (1164, 17560), (1317, 15520), (1455, 14048), (1552, 13170), (1756, 11640), (1940, 10536), (2195, 9312), (2328, 8780), (2634, 7760), (2910, 7024), (3104, 6585), (3512, 5820), (3880, 5268), (4390, 4656)]