61911990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 190466640

約数和(自身を除く): 128554650

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 101, 105, 126, 139, 147, 202, 210, 245, 278, 294, 303, 315, 417, 441, 490, 505, 606, 630, 695, 707, 735, 834, 882, 909, 973, 1010, 1251, 1390, 1414, 1470, 1515, 1818, 1946, 2085, 2121, 2205, 2502, 2919, 3030, 3535, 4170, 4242, 4410, 4545, 4865, 4949, 5838, 6255, 6363, 6811, 7070, 8757, 9090, 9730, 9898, 10605, 12510, 12726, 13622, 14039, 14595, 14847, 17514, 20433, 21210, 24745, 28078, 29190, 29694, 31815, 34055, 40866, 42117, 43785, 44541, 49490, 61299, 63630, 68110, 70195, 74235, 84234, 87570, 89082, 98273, 102165, 122598, 126351, 140390, 148470, 196546, 204330, 210585, 222705, 252702, 294819, 306495, 421170, 445410, 491365, 589638, 612990, 631755, 687911, 884457, 982730, 1263510, 1375822, 1474095, 1768914, 2063733, 2948190, 3439555, 4127466, 4422285, 6191199, 6879110, 8844570, 10318665, 12382398, 20637330, 30955995, 61911990]

約数ペア:

[(1, 61911990), (2, 30955995), (3, 20637330), (5, 12382398), (6, 10318665), (7, 8844570), (9, 6879110), (10, 6191199), (14, 4422285), (15, 4127466), (18, 3439555), (21, 2948190), (30, 2063733), (35, 1768914), (42, 1474095), (45, 1375822), (49, 1263510), (63, 982730), (70, 884457), (90, 687911), (98, 631755), (101, 612990), (105, 589638), (126, 491365), (139, 445410), (147, 421170), (202, 306495), (210, 294819), (245, 252702), (278, 222705), (294, 210585), (303, 204330), (315, 196546), (417, 148470), (441, 140390), (490, 126351), (505, 122598), (606, 102165), (630, 98273), (695, 89082), (707, 87570), (735, 84234), (834, 74235), (882, 70195), (909, 68110), (973, 63630), (1010, 61299), (1251, 49490), (1390, 44541), (1414, 43785), (1470, 42117), (1515, 40866), (1818, 34055), (1946, 31815), (2085, 29694), (2121, 29190), (2205, 28078), (2502, 24745), (2919, 21210), (3030, 20433), (3535, 17514), (4170, 14847), (4242, 14595), (4410, 14039), (4545, 13622), (4865, 12726), (4949, 12510), (5838, 10605), (6255, 9898), (6363, 9730), (6811, 9090), (7070, 8757)]