20870520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:285

約数の個数: 128

約数和(自身を含む): 69431040

約数和(自身を除く): 48560520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 97, 110, 120, 132, 163, 165, 194, 220, 264, 291, 326, 330, 388, 440, 485, 489, 582, 652, 660, 776, 815, 970, 978, 1067, 1164, 1304, 1320, 1455, 1630, 1793, 1940, 1956, 2134, 2328, 2445, 2910, 3201, 3260, 3586, 3880, 3912, 4268, 4890, 5335, 5379, 5820, 6402, 6520, 7172, 8536, 8965, 9780, 10670, 10758, 11640, 12804, 14344, 15811, 16005, 17930, 19560, 21340, 21516, 25608, 26895, 31622, 32010, 35860, 42680, 43032, 47433, 53790, 63244, 64020, 71720, 79055, 94866, 107580, 126488, 128040, 158110, 173921, 189732, 215160, 237165, 316220, 347842, 379464, 474330, 521763, 632440, 695684, 869605, 948660, 1043526, 1391368, 1739210, 1897320, 2087052, 2608815, 3478420, 4174104, 5217630, 6956840, 10435260, 20870520]

約数ペア:

[(1, 20870520), (2, 10435260), (3, 6956840), (4, 5217630), (5, 4174104), (6, 3478420), (8, 2608815), (10, 2087052), (11, 1897320), (12, 1739210), (15, 1391368), (20, 1043526), (22, 948660), (24, 869605), (30, 695684), (33, 632440), (40, 521763), (44, 474330), (55, 379464), (60, 347842), (66, 316220), (88, 237165), (97, 215160), (110, 189732), (120, 173921), (132, 158110), (163, 128040), (165, 126488), (194, 107580), (220, 94866), (264, 79055), (291, 71720), (326, 64020), (330, 63244), (388, 53790), (440, 47433), (485, 43032), (489, 42680), (582, 35860), (652, 32010), (660, 31622), (776, 26895), (815, 25608), (970, 21516), (978, 21340), (1067, 19560), (1164, 17930), (1304, 16005), (1320, 15811), (1455, 14344), (1630, 12804), (1793, 11640), (1940, 10758), (1956, 10670), (2134, 9780), (2328, 8965), (2445, 8536), (2910, 7172), (3201, 6520), (3260, 6402), (3586, 5820), (3880, 5379), (3912, 5335), (4268, 4890)]