21900240

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{10139}}^1$

素因数の和:10161

約数の個数: 80

約数和(自身を含む): 75441600

約数和(自身を除く): 53541360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 10139, 20278, 30417, 40556, 50695, 60834, 81112, 91251, 101390, 121668, 152085, 162224, 182502, 202780, 243336, 273753, 304170, 365004, 405560, 456255, 486672, 547506, 608340, 730008, 811120, 912510, 1095012, 1216680, 1368765, 1460016, 1825020, 2190024, 2433360, 2737530, 3650040, 4380048, 5475060, 7300080, 10950120, 21900240]

約数ペア:

[(1, 21900240), (2, 10950120), (3, 7300080), (4, 5475060), (5, 4380048), (6, 3650040), (8, 2737530), (9, 2433360), (10, 2190024), (12, 1825020), (15, 1460016), (16, 1368765), (18, 1216680), (20, 1095012), (24, 912510), (27, 811120), (30, 730008), (36, 608340), (40, 547506), (45, 486672), (48, 456255), (54, 405560), (60, 365004), (72, 304170), (80, 273753), (90, 243336), (108, 202780), (120, 182502), (135, 162224), (144, 152085), (180, 121668), (216, 101390), (240, 91251), (270, 81112), (360, 60834), (432, 50695), (540, 40556), (720, 30417), (1080, 20278), (2160, 10139)]