28271620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 69148800

約数和(自身を除く): 40877180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 59, 65, 76, 95, 97, 118, 130, 190, 194, 236, 247, 260, 295, 380, 388, 485, 494, 590, 767, 970, 988, 1121, 1180, 1235, 1261, 1534, 1843, 1940, 2242, 2470, 2522, 3068, 3686, 3835, 4484, 4940, 5044, 5605, 5723, 6305, 7372, 7670, 9215, 11210, 11446, 12610, 14573, 15340, 18430, 22420, 22892, 23959, 25220, 28615, 29146, 36860, 47918, 57230, 58292, 72865, 74399, 95836, 108737, 114460, 119795, 145730, 148798, 217474, 239590, 291460, 297596, 371995, 434948, 479180, 543685, 743990, 1087370, 1413581, 1487980, 2174740, 2827162, 5654324, 7067905, 14135810, 28271620]

約数ペア:

[(1, 28271620), (2, 14135810), (4, 7067905), (5, 5654324), (10, 2827162), (13, 2174740), (19, 1487980), (20, 1413581), (26, 1087370), (38, 743990), (52, 543685), (59, 479180), (65, 434948), (76, 371995), (95, 297596), (97, 291460), (118, 239590), (130, 217474), (190, 148798), (194, 145730), (236, 119795), (247, 114460), (260, 108737), (295, 95836), (380, 74399), (388, 72865), (485, 58292), (494, 57230), (590, 47918), (767, 36860), (970, 29146), (988, 28615), (1121, 25220), (1180, 23959), (1235, 22892), (1261, 22420), (1534, 18430), (1843, 15340), (1940, 14573), (2242, 12610), (2470, 11446), (2522, 11210), (3068, 9215), (3686, 7670), (3835, 7372), (4484, 6305), (4940, 5723), (5044, 5605)]