208240020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:670

約数の個数: 144

約数和(自身を含む): 662957568

約数和(自身を除く): 454717548

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 67, 90, 93, 124, 134, 155, 180, 186, 201, 268, 279, 310, 335, 372, 402, 465, 557, 558, 603, 620, 670, 804, 930, 1005, 1114, 1116, 1206, 1340, 1395, 1671, 1860, 2010, 2077, 2228, 2412, 2785, 2790, 3015, 3342, 4020, 4154, 5013, 5570, 5580, 6030, 6231, 6684, 8308, 8355, 10026, 10385, 11140, 12060, 12462, 16710, 17267, 18693, 20052, 20770, 24924, 25065, 31155, 33420, 34534, 37319, 37386, 41540, 50130, 51801, 62310, 69068, 74638, 74772, 86335, 93465, 100260, 103602, 111957, 124620, 149276, 155403, 172670, 186595, 186930, 207204, 223914, 259005, 310806, 335871, 345340, 373190, 373860, 447828, 518010, 559785, 621612, 671742, 746380, 777015, 1036020, 1119570, 1156889, 1343484, 1554030, 1679355, 2239140, 2313778, 3108060, 3358710, 3470667, 4627556, 5784445, 6717420, 6941334, 10412001, 11568890, 13882668, 17353335, 20824002, 23137780, 34706670, 41648004, 52060005, 69413340, 104120010, 208240020]

約数ペア:

[(1, 208240020), (2, 104120010), (3, 69413340), (4, 52060005), (5, 41648004), (6, 34706670), (9, 23137780), (10, 20824002), (12, 17353335), (15, 13882668), (18, 11568890), (20, 10412001), (30, 6941334), (31, 6717420), (36, 5784445), (45, 4627556), (60, 3470667), (62, 3358710), (67, 3108060), (90, 2313778), (93, 2239140), (124, 1679355), (134, 1554030), (155, 1343484), (180, 1156889), (186, 1119570), (201, 1036020), (268, 777015), (279, 746380), (310, 671742), (335, 621612), (372, 559785), (402, 518010), (465, 447828), (557, 373860), (558, 373190), (603, 345340), (620, 335871), (670, 310806), (804, 259005), (930, 223914), (1005, 207204), (1114, 186930), (1116, 186595), (1206, 172670), (1340, 155403), (1395, 149276), (1671, 124620), (1860, 111957), (2010, 103602), (2077, 100260), (2228, 93465), (2412, 86335), (2785, 74772), (2790, 74638), (3015, 69068), (3342, 62310), (4020, 51801), (4154, 50130), (5013, 41540), (5570, 37386), (5580, 37319), (6030, 34534), (6231, 33420), (6684, 31155), (8308, 25065), (8355, 24924), (10026, 20770), (10385, 20052), (11140, 18693), (12060, 17267), (12462, 16710)]