28866420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:326

約数の個数: 144

約数和(自身を含む): 97493760

約数和(自身を除く): 68627340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 61, 66, 90, 99, 110, 122, 132, 165, 180, 183, 198, 220, 239, 244, 305, 330, 366, 396, 478, 495, 549, 610, 660, 671, 717, 732, 915, 956, 990, 1098, 1195, 1220, 1342, 1434, 1830, 1980, 2013, 2151, 2196, 2390, 2629, 2684, 2745, 2868, 3355, 3585, 3660, 4026, 4302, 4780, 5258, 5490, 6039, 6710, 7170, 7887, 8052, 8604, 10065, 10516, 10755, 10980, 12078, 13145, 13420, 14340, 14579, 15774, 20130, 21510, 23661, 24156, 26290, 29158, 30195, 31548, 39435, 40260, 43020, 43737, 47322, 52580, 58316, 60390, 72895, 78870, 87474, 94644, 118305, 120780, 131211, 145790, 157740, 160369, 174948, 218685, 236610, 262422, 291580, 320738, 437370, 473220, 481107, 524844, 641476, 656055, 801845, 874740, 962214, 1312110, 1443321, 1603690, 1924428, 2405535, 2624220, 2886642, 3207380, 4811070, 5773284, 7216605, 9622140, 14433210, 28866420]

約数ペア:

[(1, 28866420), (2, 14433210), (3, 9622140), (4, 7216605), (5, 5773284), (6, 4811070), (9, 3207380), (10, 2886642), (11, 2624220), (12, 2405535), (15, 1924428), (18, 1603690), (20, 1443321), (22, 1312110), (30, 962214), (33, 874740), (36, 801845), (44, 656055), (45, 641476), (55, 524844), (60, 481107), (61, 473220), (66, 437370), (90, 320738), (99, 291580), (110, 262422), (122, 236610), (132, 218685), (165, 174948), (180, 160369), (183, 157740), (198, 145790), (220, 131211), (239, 120780), (244, 118305), (305, 94644), (330, 87474), (366, 78870), (396, 72895), (478, 60390), (495, 58316), (549, 52580), (610, 47322), (660, 43737), (671, 43020), (717, 40260), (732, 39435), (915, 31548), (956, 30195), (990, 29158), (1098, 26290), (1195, 24156), (1220, 23661), (1342, 21510), (1434, 20130), (1830, 15774), (1980, 14579), (2013, 14340), (2151, 13420), (2196, 13145), (2390, 12078), (2629, 10980), (2684, 10755), (2745, 10516), (2868, 10065), (3355, 8604), (3585, 8052), (3660, 7887), (4026, 7170), (4302, 6710), (4780, 6039), (5258, 5490)]