21122790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1321}}^1$

素因数の和:1385

約数の個数: 64

約数和(自身を含む): 55968192

約数和(自身を除く): 34845402

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1321, 1599, 2642, 2665, 3198, 3963, 5330, 6605, 7926, 7995, 13210, 15990, 17173, 19815, 34346, 39630, 51519, 54161, 85865, 103038, 108322, 162483, 171730, 257595, 270805, 324966, 515190, 541610, 704093, 812415, 1408186, 1624830, 2112279, 3520465, 4224558, 7040930, 10561395, 21122790]

約数ペア:

[(1, 21122790), (2, 10561395), (3, 7040930), (5, 4224558), (6, 3520465), (10, 2112279), (13, 1624830), (15, 1408186), (26, 812415), (30, 704093), (39, 541610), (41, 515190), (65, 324966), (78, 270805), (82, 257595), (123, 171730), (130, 162483), (195, 108322), (205, 103038), (246, 85865), (390, 54161), (410, 51519), (533, 39630), (615, 34346), (1066, 19815), (1230, 17173), (1321, 15990), (1599, 13210), (2642, 7995), (2665, 7926), (3198, 6605), (3963, 5330)]