15781220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:94

約数の個数: 144

約数和(自身を含む): 44271360

約数和(自身を除く): 28490140

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 29, 35, 46, 52, 58, 65, 70, 91, 92, 115, 116, 130, 140, 145, 161, 169, 182, 203, 230, 260, 290, 299, 322, 338, 364, 377, 406, 455, 460, 580, 598, 644, 667, 676, 754, 805, 812, 845, 910, 1015, 1183, 1196, 1334, 1495, 1508, 1610, 1690, 1820, 1885, 2030, 2093, 2366, 2639, 2668, 2990, 3220, 3335, 3380, 3770, 3887, 4060, 4186, 4669, 4732, 4901, 5278, 5915, 5980, 6670, 7540, 7774, 8372, 8671, 9338, 9802, 10465, 10556, 11830, 13195, 13340, 15548, 17342, 18676, 19435, 19604, 20930, 23345, 23660, 24505, 26390, 27209, 34307, 34684, 38870, 41860, 43355, 46690, 49010, 52780, 54418, 60697, 68614, 77740, 86710, 93380, 98020, 108836, 112723, 121394, 136045, 137228, 171535, 173420, 225446, 242788, 272090, 303485, 343070, 450892, 544180, 563615, 606970, 686140, 789061, 1127230, 1213940, 1578122, 2254460, 3156244, 3945305, 7890610, 15781220]

約数ペア:

[(1, 15781220), (2, 7890610), (4, 3945305), (5, 3156244), (7, 2254460), (10, 1578122), (13, 1213940), (14, 1127230), (20, 789061), (23, 686140), (26, 606970), (28, 563615), (29, 544180), (35, 450892), (46, 343070), (52, 303485), (58, 272090), (65, 242788), (70, 225446), (91, 173420), (92, 171535), (115, 137228), (116, 136045), (130, 121394), (140, 112723), (145, 108836), (161, 98020), (169, 93380), (182, 86710), (203, 77740), (230, 68614), (260, 60697), (290, 54418), (299, 52780), (322, 49010), (338, 46690), (364, 43355), (377, 41860), (406, 38870), (455, 34684), (460, 34307), (580, 27209), (598, 26390), (644, 24505), (667, 23660), (676, 23345), (754, 20930), (805, 19604), (812, 19435), (845, 18676), (910, 17342), (1015, 15548), (1183, 13340), (1196, 13195), (1334, 11830), (1495, 10556), (1508, 10465), (1610, 9802), (1690, 9338), (1820, 8671), (1885, 8372), (2030, 7774), (2093, 7540), (2366, 6670), (2639, 5980), (2668, 5915), (2990, 5278), (3220, 4901), (3335, 4732), (3380, 4669), (3770, 4186), (3887, 4060)]