21000279700

素因数分解:

$2^2\times 5^2\times {\mathrm{151}}^1\times {\mathrm{173}}^1\times {\mathrm{8039}}^1$

素因数の和:8377

約数の個数: 72

約数和(自身を含む): 46143296640

約数和(自身を除く): 25143016940

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 151, 173, 302, 346, 604, 692, 755, 865, 1510, 1730, 3020, 3460, 3775, 4325, 7550, 8039, 8650, 15100, 16078, 17300, 26123, 32156, 40195, 52246, 80390, 104492, 130615, 160780, 200975, 261230, 401950, 522460, 653075, 803900, 1213889, 1306150, 1390747, 2427778, 2612300, 2781494, 4855556, 5562988, 6069445, 6953735, 12138890, 13907470, 24277780, 27814940, 30347225, 34768675, 60694450, 69537350, 121388900, 139074700, 210002797, 420005594, 840011188, 1050013985, 2100027970, 4200055940, 5250069925, 10500139850, 21000279700]

約数ペア:

[(1, 21000279700), (2, 10500139850), (4, 5250069925), (5, 4200055940), (10, 2100027970), (20, 1050013985), (25, 840011188), (50, 420005594), (100, 210002797), (151, 139074700), (173, 121388900), (302, 69537350), (346, 60694450), (604, 34768675), (692, 30347225), (755, 27814940), (865, 24277780), (1510, 13907470), (1730, 12138890), (3020, 6953735), (3460, 6069445), (3775, 5562988), (4325, 4855556), (7550, 2781494), (8039, 2612300), (8650, 2427778), (15100, 1390747), (16078, 1306150), (17300, 1213889), (26123, 803900), (32156, 653075), (40195, 522460), (52246, 401950), (80390, 261230), (104492, 200975), (130615, 160780)]