20123808040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10267249}}^1$

素因数の和:10267274

約数の個数: 48

約数和(自身を含む): 52670992500

約数和(自身を除く): 32547184460

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10267249, 20534498, 41068996, 51336245, 71870743, 82137992, 102672490, 143741486, 205344980, 287482972, 359353715, 410689960, 503095201, 574965944, 718707430, 1006190402, 1437414860, 2012380804, 2515476005, 2874829720, 4024761608, 5030952010, 10061904020, 20123808040]

約数ペア:

[(1, 20123808040), (2, 10061904020), (4, 5030952010), (5, 4024761608), (7, 2874829720), (8, 2515476005), (10, 2012380804), (14, 1437414860), (20, 1006190402), (28, 718707430), (35, 574965944), (40, 503095201), (49, 410689960), (56, 359353715), (70, 287482972), (98, 205344980), (140, 143741486), (196, 102672490), (245, 82137992), (280, 71870743), (392, 51336245), (490, 41068996), (980, 20534498), (1960, 10267249)]