19921220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 49545216

約数和(自身を除く): 29623996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 31, 44, 46, 55, 62, 92, 110, 115, 124, 127, 155, 220, 230, 253, 254, 310, 341, 460, 506, 508, 620, 635, 682, 713, 1012, 1265, 1270, 1364, 1397, 1426, 1705, 2530, 2540, 2794, 2852, 2921, 3410, 3565, 3937, 5060, 5588, 5842, 6820, 6985, 7130, 7843, 7874, 11684, 13970, 14260, 14605, 15686, 15748, 19685, 27940, 29210, 31372, 32131, 39215, 39370, 43307, 58420, 64262, 78430, 78740, 86614, 90551, 128524, 156860, 160655, 173228, 181102, 216535, 321310, 362204, 433070, 452755, 642620, 866140, 905510, 996061, 1811020, 1992122, 3984244, 4980305, 9960610, 19921220]

約数ペア:

[(1, 19921220), (2, 9960610), (4, 4980305), (5, 3984244), (10, 1992122), (11, 1811020), (20, 996061), (22, 905510), (23, 866140), (31, 642620), (44, 452755), (46, 433070), (55, 362204), (62, 321310), (92, 216535), (110, 181102), (115, 173228), (124, 160655), (127, 156860), (155, 128524), (220, 90551), (230, 86614), (253, 78740), (254, 78430), (310, 64262), (341, 58420), (460, 43307), (506, 39370), (508, 39215), (620, 32131), (635, 31372), (682, 29210), (713, 27940), (1012, 19685), (1265, 15748), (1270, 15686), (1364, 14605), (1397, 14260), (1426, 13970), (1705, 11684), (2530, 7874), (2540, 7843), (2794, 7130), (2852, 6985), (2921, 6820), (3410, 5842), (3565, 5588), (3937, 5060)]