19561680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{269}}^1$

素因数の和:389

約数の個数: 120

約数和(自身を含む): 66591720

約数和(自身を除く): 47030040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 101, 120, 144, 180, 202, 240, 269, 303, 360, 404, 505, 538, 606, 720, 807, 808, 909, 1010, 1076, 1212, 1345, 1515, 1614, 1616, 1818, 2020, 2152, 2421, 2424, 2690, 3030, 3228, 3636, 4035, 4040, 4304, 4545, 4842, 4848, 5380, 6060, 6456, 7272, 8070, 8080, 9090, 9684, 10760, 12105, 12120, 12912, 14544, 16140, 18180, 19368, 21520, 24210, 24240, 27169, 32280, 36360, 38736, 48420, 54338, 64560, 72720, 81507, 96840, 108676, 135845, 163014, 193680, 217352, 244521, 271690, 326028, 407535, 434704, 489042, 543380, 652056, 815070, 978084, 1086760, 1222605, 1304112, 1630140, 1956168, 2173520, 2445210, 3260280, 3912336, 4890420, 6520560, 9780840, 19561680]

約数ペア:

[(1, 19561680), (2, 9780840), (3, 6520560), (4, 4890420), (5, 3912336), (6, 3260280), (8, 2445210), (9, 2173520), (10, 1956168), (12, 1630140), (15, 1304112), (16, 1222605), (18, 1086760), (20, 978084), (24, 815070), (30, 652056), (36, 543380), (40, 489042), (45, 434704), (48, 407535), (60, 326028), (72, 271690), (80, 244521), (90, 217352), (101, 193680), (120, 163014), (144, 135845), (180, 108676), (202, 96840), (240, 81507), (269, 72720), (303, 64560), (360, 54338), (404, 48420), (505, 38736), (538, 36360), (606, 32280), (720, 27169), (807, 24240), (808, 24210), (909, 21520), (1010, 19368), (1076, 18180), (1212, 16140), (1345, 14544), (1515, 12912), (1614, 12120), (1616, 12105), (1818, 10760), (2020, 9684), (2152, 9090), (2421, 8080), (2424, 8070), (2690, 7272), (3030, 6456), (3228, 6060), (3636, 5380), (4035, 4848), (4040, 4842), (4304, 4545)]