18509480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 49766400

約数和(自身を除く): 31256920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 31, 40, 44, 46, 55, 59, 62, 88, 92, 110, 115, 118, 124, 155, 184, 220, 230, 236, 248, 253, 295, 310, 341, 440, 460, 472, 506, 590, 620, 649, 682, 713, 920, 1012, 1180, 1240, 1265, 1298, 1357, 1364, 1426, 1705, 1829, 2024, 2360, 2530, 2596, 2714, 2728, 2852, 3245, 3410, 3565, 3658, 5060, 5192, 5428, 5704, 6490, 6785, 6820, 7130, 7316, 7843, 9145, 10120, 10856, 12980, 13570, 13640, 14260, 14632, 14927, 15686, 18290, 20119, 25960, 27140, 28520, 29854, 31372, 36580, 39215, 40238, 42067, 54280, 59708, 62744, 73160, 74635, 78430, 80476, 84134, 100595, 119416, 149270, 156860, 160952, 168268, 201190, 210335, 298540, 313720, 336536, 402380, 420670, 462737, 597080, 804760, 841340, 925474, 1682680, 1850948, 2313685, 3701896, 4627370, 9254740, 18509480]

約数ペア:

[(1, 18509480), (2, 9254740), (4, 4627370), (5, 3701896), (8, 2313685), (10, 1850948), (11, 1682680), (20, 925474), (22, 841340), (23, 804760), (31, 597080), (40, 462737), (44, 420670), (46, 402380), (55, 336536), (59, 313720), (62, 298540), (88, 210335), (92, 201190), (110, 168268), (115, 160952), (118, 156860), (124, 149270), (155, 119416), (184, 100595), (220, 84134), (230, 80476), (236, 78430), (248, 74635), (253, 73160), (295, 62744), (310, 59708), (341, 54280), (440, 42067), (460, 40238), (472, 39215), (506, 36580), (590, 31372), (620, 29854), (649, 28520), (682, 27140), (713, 25960), (920, 20119), (1012, 18290), (1180, 15686), (1240, 14927), (1265, 14632), (1298, 14260), (1357, 13640), (1364, 13570), (1426, 12980), (1705, 10856), (1829, 10120), (2024, 9145), (2360, 7843), (2530, 7316), (2596, 7130), (2714, 6820), (2728, 6785), (2852, 6490), (3245, 5704), (3410, 5428), (3565, 5192), (3658, 5060)]