28218420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 92951040

約数和(自身を除く): 64732620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 37, 38, 45, 57, 60, 74, 76, 90, 95, 111, 114, 148, 171, 180, 185, 190, 222, 223, 228, 285, 333, 342, 370, 380, 444, 446, 555, 570, 666, 669, 684, 703, 740, 855, 892, 1110, 1115, 1140, 1332, 1338, 1406, 1665, 1710, 2007, 2109, 2220, 2230, 2676, 2812, 3330, 3345, 3420, 3515, 4014, 4218, 4237, 4460, 6327, 6660, 6690, 7030, 8028, 8251, 8436, 8474, 10035, 10545, 12654, 12711, 13380, 14060, 16502, 16948, 20070, 21090, 21185, 24753, 25308, 25422, 31635, 33004, 38133, 40140, 41255, 42180, 42370, 49506, 50844, 63270, 63555, 74259, 76266, 82510, 84740, 99012, 123765, 126540, 127110, 148518, 152532, 156769, 165020, 190665, 247530, 254220, 297036, 313538, 371295, 381330, 470307, 495060, 627076, 742590, 762660, 783845, 940614, 1410921, 1485180, 1567690, 1881228, 2351535, 2821842, 3135380, 4703070, 5643684, 7054605, 9406140, 14109210, 28218420]

約数ペア:

[(1, 28218420), (2, 14109210), (3, 9406140), (4, 7054605), (5, 5643684), (6, 4703070), (9, 3135380), (10, 2821842), (12, 2351535), (15, 1881228), (18, 1567690), (19, 1485180), (20, 1410921), (30, 940614), (36, 783845), (37, 762660), (38, 742590), (45, 627076), (57, 495060), (60, 470307), (74, 381330), (76, 371295), (90, 313538), (95, 297036), (111, 254220), (114, 247530), (148, 190665), (171, 165020), (180, 156769), (185, 152532), (190, 148518), (222, 127110), (223, 126540), (228, 123765), (285, 99012), (333, 84740), (342, 82510), (370, 76266), (380, 74259), (444, 63555), (446, 63270), (555, 50844), (570, 49506), (666, 42370), (669, 42180), (684, 41255), (703, 40140), (740, 38133), (855, 33004), (892, 31635), (1110, 25422), (1115, 25308), (1140, 24753), (1332, 21185), (1338, 21090), (1406, 20070), (1665, 16948), (1710, 16502), (2007, 14060), (2109, 13380), (2220, 12711), (2230, 12654), (2676, 10545), (2812, 10035), (3330, 8474), (3345, 8436), (3420, 8251), (3515, 8028), (4014, 7030), (4218, 6690), (4237, 6660), (4460, 6327)]