20477860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:193

約数の個数: 96

約数和(自身を含む): 50676192

約数和(自身を除く): 30198332

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 41, 52, 65, 68, 82, 85, 113, 130, 164, 170, 205, 221, 226, 260, 340, 410, 442, 452, 533, 565, 697, 820, 884, 1066, 1105, 1130, 1394, 1469, 1921, 2132, 2210, 2260, 2665, 2788, 2938, 3485, 3842, 4420, 4633, 5330, 5876, 6970, 7345, 7684, 9061, 9266, 9605, 10660, 13940, 14690, 18122, 18532, 19210, 23165, 24973, 29380, 36244, 38420, 45305, 46330, 49946, 60229, 78761, 90610, 92660, 99892, 120458, 124865, 157522, 181220, 240916, 249730, 301145, 315044, 393805, 499460, 602290, 787610, 1023893, 1204580, 1575220, 2047786, 4095572, 5119465, 10238930, 20477860]

約数ペア:

[(1, 20477860), (2, 10238930), (4, 5119465), (5, 4095572), (10, 2047786), (13, 1575220), (17, 1204580), (20, 1023893), (26, 787610), (34, 602290), (41, 499460), (52, 393805), (65, 315044), (68, 301145), (82, 249730), (85, 240916), (113, 181220), (130, 157522), (164, 124865), (170, 120458), (205, 99892), (221, 92660), (226, 90610), (260, 78761), (340, 60229), (410, 49946), (442, 46330), (452, 45305), (533, 38420), (565, 36244), (697, 29380), (820, 24973), (884, 23165), (1066, 19210), (1105, 18532), (1130, 18122), (1394, 14690), (1469, 13940), (1921, 10660), (2132, 9605), (2210, 9266), (2260, 9061), (2665, 7684), (2788, 7345), (2938, 6970), (3485, 5876), (3842, 5330), (4420, 4633)]