28809700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:349

約数の個数: 72

約数和(自身を含む): 67183200

約数和(自身を除く): 38373500

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 59, 76, 95, 100, 118, 190, 236, 257, 295, 380, 475, 514, 590, 950, 1028, 1121, 1180, 1285, 1475, 1900, 2242, 2570, 2950, 4484, 4883, 5140, 5605, 5900, 6425, 9766, 11210, 12850, 15163, 19532, 22420, 24415, 25700, 28025, 30326, 48830, 56050, 60652, 75815, 97660, 112100, 122075, 151630, 244150, 288097, 303260, 379075, 488300, 576194, 758150, 1152388, 1440485, 1516300, 2880970, 5761940, 7202425, 14404850, 28809700]

約数ペア:

[(1, 28809700), (2, 14404850), (4, 7202425), (5, 5761940), (10, 2880970), (19, 1516300), (20, 1440485), (25, 1152388), (38, 758150), (50, 576194), (59, 488300), (76, 379075), (95, 303260), (100, 288097), (118, 244150), (190, 151630), (236, 122075), (257, 112100), (295, 97660), (380, 75815), (475, 60652), (514, 56050), (590, 48830), (950, 30326), (1028, 28025), (1121, 25700), (1180, 24415), (1285, 22420), (1475, 19532), (1900, 15163), (2242, 12850), (2570, 11210), (2950, 9766), (4484, 6425), (4883, 5900), (5140, 5605)]