18249880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 128

約数和(自身を含む): 49248000

約数和(自身を除く): 30998120

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 37, 38, 40, 44, 55, 59, 74, 76, 88, 95, 110, 118, 148, 152, 185, 190, 209, 220, 236, 295, 296, 370, 380, 407, 418, 440, 472, 590, 649, 703, 740, 760, 814, 836, 1045, 1121, 1180, 1298, 1406, 1480, 1628, 1672, 2035, 2090, 2183, 2242, 2360, 2596, 2812, 3245, 3256, 3515, 4070, 4180, 4366, 4484, 5192, 5605, 5624, 6490, 7030, 7733, 8140, 8360, 8732, 8968, 10915, 11210, 12331, 12980, 14060, 15466, 16280, 17464, 21830, 22420, 24013, 24662, 25960, 28120, 30932, 38665, 41477, 43660, 44840, 48026, 49324, 61655, 61864, 77330, 82954, 87320, 96052, 98648, 120065, 123310, 154660, 165908, 192104, 207385, 240130, 246620, 309320, 331816, 414770, 456247, 480260, 493240, 829540, 912494, 960520, 1659080, 1824988, 2281235, 3649976, 4562470, 9124940, 18249880]

約数ペア:

[(1, 18249880), (2, 9124940), (4, 4562470), (5, 3649976), (8, 2281235), (10, 1824988), (11, 1659080), (19, 960520), (20, 912494), (22, 829540), (37, 493240), (38, 480260), (40, 456247), (44, 414770), (55, 331816), (59, 309320), (74, 246620), (76, 240130), (88, 207385), (95, 192104), (110, 165908), (118, 154660), (148, 123310), (152, 120065), (185, 98648), (190, 96052), (209, 87320), (220, 82954), (236, 77330), (295, 61864), (296, 61655), (370, 49324), (380, 48026), (407, 44840), (418, 43660), (440, 41477), (472, 38665), (590, 30932), (649, 28120), (703, 25960), (740, 24662), (760, 24013), (814, 22420), (836, 21830), (1045, 17464), (1121, 16280), (1180, 15466), (1298, 14060), (1406, 12980), (1480, 12331), (1628, 11210), (1672, 10915), (2035, 8968), (2090, 8732), (2183, 8360), (2242, 8140), (2360, 7733), (2596, 7030), (2812, 6490), (3245, 5624), (3256, 5605), (3515, 5192), (4070, 4484), (4180, 4366)]