19402100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 45418968

約数和(自身を除く): 26016868

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 101, 113, 170, 202, 226, 340, 404, 425, 452, 505, 565, 850, 1010, 1130, 1700, 1717, 1921, 2020, 2260, 2525, 2825, 3434, 3842, 5050, 5650, 6868, 7684, 8585, 9605, 10100, 11300, 11413, 17170, 19210, 22826, 34340, 38420, 42925, 45652, 48025, 57065, 85850, 96050, 114130, 171700, 192100, 194021, 228260, 285325, 388042, 570650, 776084, 970105, 1141300, 1940210, 3880420, 4850525, 9701050, 19402100]

約数ペア:

[(1, 19402100), (2, 9701050), (4, 4850525), (5, 3880420), (10, 1940210), (17, 1141300), (20, 970105), (25, 776084), (34, 570650), (50, 388042), (68, 285325), (85, 228260), (100, 194021), (101, 192100), (113, 171700), (170, 114130), (202, 96050), (226, 85850), (340, 57065), (404, 48025), (425, 45652), (452, 42925), (505, 38420), (565, 34340), (850, 22826), (1010, 19210), (1130, 17170), (1700, 11413), (1717, 11300), (1921, 10100), (2020, 9605), (2260, 8585), (2525, 7684), (2825, 6868), (3434, 5650), (3842, 5050)]