19883668

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 21242732

約数列:

[1, 2, 4, 7, 14, 28, 79, 89, 101, 158, 178, 202, 316, 356, 404, 553, 623, 707, 1106, 1246, 1414, 2212, 2492, 2828, 7031, 7979, 8989, 14062, 15958, 17978, 28124, 31916, 35956, 49217, 55853, 62923, 98434, 111706, 125846, 196868, 223412, 251692, 710131, 1420262, 2840524, 4970917, 9941834, 19883668]

約数ペア:

[(1, 19883668), (2, 9941834), (4, 4970917), (7, 2840524), (14, 1420262), (28, 710131), (79, 251692), (89, 223412), (101, 196868), (158, 125846), (178, 111706), (202, 98434), (316, 62923), (356, 55853), (404, 49217), (553, 35956), (623, 31916), (707, 28124), (1106, 17978), (1246, 15958), (1414, 14062), (2212, 8989), (2492, 7979), (2828, 7031)]