19726980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3613}}^1$

素因数の和:3645

約数の個数: 96

約数和(自身を含む): 68001024

約数和(自身を除く): 48274044

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 3613, 5460, 7226, 10839, 14452, 18065, 21678, 25291, 36130, 43356, 46969, 50582, 54195, 72260, 75873, 93938, 101164, 108390, 126455, 140907, 151746, 187876, 216780, 234845, 252910, 281814, 303492, 328783, 379365, 469690, 505820, 563628, 657566, 704535, 758730, 939380, 986349, 1315132, 1409070, 1517460, 1643915, 1972698, 2818140, 3287830, 3945396, 4931745, 6575660, 9863490, 19726980]

約数ペア:

[(1, 19726980), (2, 9863490), (3, 6575660), (4, 4931745), (5, 3945396), (6, 3287830), (7, 2818140), (10, 1972698), (12, 1643915), (13, 1517460), (14, 1409070), (15, 1315132), (20, 986349), (21, 939380), (26, 758730), (28, 704535), (30, 657566), (35, 563628), (39, 505820), (42, 469690), (52, 379365), (60, 328783), (65, 303492), (70, 281814), (78, 252910), (84, 234845), (91, 216780), (105, 187876), (130, 151746), (140, 140907), (156, 126455), (182, 108390), (195, 101164), (210, 93938), (260, 75873), (273, 72260), (364, 54195), (390, 50582), (420, 46969), (455, 43356), (546, 36130), (780, 25291), (910, 21678), (1092, 18065), (1365, 14452), (1820, 10839), (2730, 7226), (3613, 5460)]