21901300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{11527}}^1$

素因数の和:11560

約数の個数: 36

約数和(自身を含む): 50031520

約数和(自身を除く): 28130220

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 11527, 23054, 46108, 57635, 115270, 219013, 230540, 288175, 438026, 576350, 876052, 1095065, 1152700, 2190130, 4380260, 5475325, 10950650, 21901300]

約数ペア:

[(1, 21901300), (2, 10950650), (4, 5475325), (5, 4380260), (10, 2190130), (19, 1152700), (20, 1095065), (25, 876052), (38, 576350), (50, 438026), (76, 288175), (95, 230540), (100, 219013), (190, 115270), (380, 57635), (475, 46108), (950, 23054), (1900, 11527)]