20938190

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:226

約数の個数: 96

約数和(自身を含む): 49986720

約数和(自身を除く): 29048530

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 49, 65, 70, 91, 95, 98, 130, 133, 173, 182, 190, 245, 247, 266, 346, 455, 490, 494, 637, 665, 865, 910, 931, 1211, 1235, 1274, 1330, 1729, 1730, 1862, 2249, 2422, 2470, 3185, 3287, 3458, 4498, 4655, 6055, 6370, 6574, 8477, 8645, 9310, 11245, 12103, 12110, 15743, 16435, 16954, 17290, 22490, 23009, 24206, 31486, 32870, 42385, 42731, 46018, 60515, 78715, 84770, 85462, 110201, 115045, 121030, 157430, 161063, 213655, 220402, 230090, 299117, 322126, 427310, 551005, 598234, 805315, 1102010, 1495585, 1610630, 2093819, 2991170, 4187638, 10469095, 20938190]

約数ペア:

[(1, 20938190), (2, 10469095), (5, 4187638), (7, 2991170), (10, 2093819), (13, 1610630), (14, 1495585), (19, 1102010), (26, 805315), (35, 598234), (38, 551005), (49, 427310), (65, 322126), (70, 299117), (91, 230090), (95, 220402), (98, 213655), (130, 161063), (133, 157430), (173, 121030), (182, 115045), (190, 110201), (245, 85462), (247, 84770), (266, 78715), (346, 60515), (455, 46018), (490, 42731), (494, 42385), (637, 32870), (665, 31486), (865, 24206), (910, 23009), (931, 22490), (1211, 17290), (1235, 16954), (1274, 16435), (1330, 15743), (1729, 12110), (1730, 12103), (1862, 11245), (2249, 9310), (2422, 8645), (2470, 8477), (3185, 6574), (3287, 6370), (3458, 6055), (4498, 4655)]