20025810

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:285

約数の個数: 144

約数和(自身を含む): 64022400

約数和(自身を除く): 43996590

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 38, 42, 45, 49, 57, 63, 70, 90, 95, 98, 105, 114, 126, 133, 147, 171, 190, 210, 239, 245, 266, 285, 294, 315, 342, 399, 441, 478, 490, 570, 630, 665, 717, 735, 798, 855, 882, 931, 1195, 1197, 1330, 1434, 1470, 1673, 1710, 1862, 1995, 2151, 2205, 2390, 2394, 2793, 3346, 3585, 3990, 4302, 4410, 4541, 4655, 5019, 5586, 5985, 7170, 8365, 8379, 9082, 9310, 10038, 10755, 11711, 11970, 13623, 13965, 15057, 16730, 16758, 21510, 22705, 23422, 25095, 27246, 27930, 30114, 31787, 35133, 40869, 41895, 45410, 50190, 58555, 63574, 68115, 70266, 75285, 81738, 83790, 95361, 105399, 117110, 136230, 150570, 158935, 175665, 190722, 204345, 210798, 222509, 286083, 317870, 351330, 408690, 445018, 476805, 526995, 572166, 667527, 953610, 1053990, 1112545, 1335054, 1430415, 2002581, 2225090, 2860830, 3337635, 4005162, 6675270, 10012905, 20025810]

約数ペア:

[(1, 20025810), (2, 10012905), (3, 6675270), (5, 4005162), (6, 3337635), (7, 2860830), (9, 2225090), (10, 2002581), (14, 1430415), (15, 1335054), (18, 1112545), (19, 1053990), (21, 953610), (30, 667527), (35, 572166), (38, 526995), (42, 476805), (45, 445018), (49, 408690), (57, 351330), (63, 317870), (70, 286083), (90, 222509), (95, 210798), (98, 204345), (105, 190722), (114, 175665), (126, 158935), (133, 150570), (147, 136230), (171, 117110), (190, 105399), (210, 95361), (239, 83790), (245, 81738), (266, 75285), (285, 70266), (294, 68115), (315, 63574), (342, 58555), (399, 50190), (441, 45410), (478, 41895), (490, 40869), (570, 35133), (630, 31787), (665, 30114), (717, 27930), (735, 27246), (798, 25095), (855, 23422), (882, 22705), (931, 21510), (1195, 16758), (1197, 16730), (1330, 15057), (1434, 13965), (1470, 13623), (1673, 11970), (1710, 11711), (1862, 10755), (1995, 10038), (2151, 9310), (2205, 9082), (2390, 8379), (2394, 8365), (2793, 7170), (3346, 5985), (3585, 5586), (3990, 5019), (4302, 4655), (4410, 4541)]